Document:

Exhibit 10.17

                                POWER OF ATTORNEY

         Know all by these presents, that the undersigned hereby constitutes and
appoints Andrew A. Merdek the undersigned's true and lawful attorney-in-fact to:

     (1)      execute for and on behalf of the undersigned, in the undersigned's
              capacity as a five-percent  (5%) beneficial owner of shares of the
              Series  A  Common  Stock  of  At  Home  Corporation,   a  Delaware
              corporation (the "Issuer"),  statements on Schedule 13D (including
              amendments   thereto)  and  Schedule  13G  (including   amendments
              thereto) in accordance with Section 13 of the Securities  Exchange
              Act of 1934, as amended, and the rules promulgated thereunder;

     (2)      do  and  perform  any  and  all  acts  for  and on  behalf  of the
              undersigned  which may be  necessary  or desirable to complete and
              execute any such statements on Schedule 13D (including  amendments
              thereto) and  Schedule 13G  (including  amendments  thereto),  and
              timely file such statements with the United States  Securities and
              Exchange  Commission and any stock exchange or similar  authority;
              and

     (3)      take any other action of any type  whatsoever in  connection  with
              the foregoing which, in the opinion of such attorney-in-fact,  may
              be of benefit to, in the best interest of, or legally required by,
              the undersigned,  it being understood that the documents  executed
              by such  attorney-in-fact on behalf of the undersigned pursuant to
              this  Power of  Attorney  shall be in such form and shall  contain
              such terms and conditions as such  attorney-in-fact may approve in
              such attorney-in-fact's discretion.

         The undersigned hereby grants to such  attorney-in-fact  full power and
authority  to do and perform any and every act and thing  whatsoever  requisite,
necessary,  or proper to be done in the exercise of any of the rights and powers
herein granted, as fully to all intents and purposes as the undersigned might or
could do if personally  present,  with full power of substitution or revocation,
hereby  ratifying  and  confirming  all  that  such  attorney-in-fact,  or  such
attorney-in-fact's  substitute or substitutes,  shall lawfully do or cause to be
done by virtue of this  power of  attorney  and the  rights  and  powers  herein
granted. The undersigned  acknowledges that the foregoing  attorney-in-fact,  in
serving in such capacity at the request of the undersigned, is not assuming, nor
is the Issuer assuming, any of the undersigned's responsibilities to comply with
Section  13 of the  Securities  Exchange  Act of 1934 or the  rules  promulgated
thereunder.

         This Power of Attorney  shall remain in full force and effect until the
undersigned is no longer  required to file statements on Schedule 13D (including
amendments thereto) or Schedule 13G (including  amendments thereto) with respect
to the  undersigned's  holdings of and transactions in securities  issued by the
Issuer,  unless earlier revoked by the undersigned in a signed writing delivered
to the foregoing attorney-in-fact.
<PAGE>

         IN WITNESS  WHEREOF,  the undersigned has caused this Power of Attorney
to be executed as of this ___ day of April, 2000.

     May 31, 2000                                        /s/ Anne Cox Chambers
    -----------------------                              -----------------------
            Date                                         Anne Cox Chambers<PAGE>
                                                                    Exhibit 4.15
[ONI Systems Corp. Letterhead]

May 24, 2000

Mr. John Remondi
Vice President
FMR Corp.
82 Devonshire Street R25D
Boston, MA  02109

     Re:  Waiver of Vesting and Exercise Restrictions

Dear Mr. Remondi:

     Pursuant to Section 4.2 of that certain Warrant to Purchase Common Stock of
Optical Networks, Incorporated dated as of February 15, 2000 (the "Warrant") by
and between FMR Corp. and ONI Systems Corp. (formerly Optical Networks,
Incorporated), we hereby clarify that the Expiration Date as stated on the cover
page of the Warrant was erroneously stated as February 14, 2005 and that the
correct Expiration Date is February 14, 2007  The Warrant automatically becomes
fully exercisable under Section 1.1 of the Warrant at the open of business on
February 14, 2007 and terminates at the close of business on February 14, 2007.

     Except as specifically set forth in this letter, the Warrant shall continue
in full force and effect in accordance with its terms.

                              Very truly yours,

                              /s/ Michael A. Dillon
                              Michael A. Dillon
                              Vice President and General Counsel
MAD/blbSUBSCRIPTION AGREEMENT

                                  INSTRUCTIONS

         Each  subscriber must complete and sign the  Subscription  Agreement in
accordance  with the  following  instructions.  Subscribers  must  meet  certain
requirements in order for One World Online.com,  Inc. (the "Company"),  a Nevada
corporation,  to comply  with the  offering  exemptions  from  registration  and
qualification  under  the  Federal  Securities  Act of  1933,  as  amended,  and
applicable  state  securities  laws. The Company will be relying on the accuracy
and  completeness  of  information  provided in the  Subscription  Agreement  to
establish the  qualifications  of prospective  investors and the Company's legal
right to sell these securities.  The Subscription Agreement will at all times be
kept  strictly  confidential,  unless  necessary to establish  the legality of a
prospective  investor's  participation  in the offering.  The Company  should be
contacted  immediately if there is any change in the information the prospective
investor has provided.

         1. Complete and sign the SUBSCRIPTION AGREEMENT.

         2. The  following  sets forth the  number of  signatures  required  for
different forms of ownership:

         Form of Ownership:              Signatures Required
         ------------------              -------------------

         Individual:                     One signature required.

         Joint Tenants With
          Right of Survivorship:         Both parties must sign.

         Tenants in Common:              All parties must sign.

         Community Property:             One signature required if security will
                                         be held  in one  name;  two  signatures
                                         required  if  security  will be held in
                                         both names.

         Corporation:                    Signature  of  authorized   officer  or
                                         officers required.

         Partnership:                    Signature of general partner  required;
                                         additional  signatures only if required
                                         by partnership agreement.

         Trust:                          Trustee's   signature   must   indicate
                                         "Trustee for the __________ Trust."

         Other Entities:                 As required by the applicable  document
                                         governing such entity.

<PAGE>

                             SUBSCRIPTION AGREEMENT

                           ONE WORLD ONLINE.COM, INC.
                4778 North 300 West, Suite 200, Provo, Utah 84604
                              PHONE: (801) 852-3540
                               FAX: (801) 852-3550

         THIS SUBSCRIPTION  AGREEMENT  ("Agreement")  made this 22nd day of May,
2000,  by and between One World  Online.com,  Inc.,  a Nevada  corporation  (the
"Company") and (the  "Subscriber"),  who, for and in consideration of the mutual
promises and covenants set forth herein, do hereto agree as follows:

         1.  Subscription.  The  Subscriber  hereby  subscribes  for one hundred
thousand (100,000) shares of Series A Convertible Preferred Stock (the "Shares")
at a price of $3.00 per Share, and agrees to make a capital  contribution to the
Company in the amount of three hundred thousand dollars ($300,000).  One hundred
thousand dollars ($100,000) of the subscription price is tendered herewith,  and
the remaining  subscription  price shall be paid in accordance with the terms of
the Promissory Note attached hereto as Exhibit A. The subscription  evidenced by
this Agreement  ("Subscription")  is an  irrevocable  offer by the Subscriber to
subscribe  for the Shares  offered  by the  Company,  and,  subject to the terms
hereof,  shall become upon the acceptance thereof by the Company, a contract for
the sale of said Shares.  Upon  acceptance of this  subscription by the Company,
the net proceeds will be available for immediate use by the Company.  Agreements
and subscription funds should be sent to the Company.

         2.  Acceptance.  This  Agreement  is  made  subject  to  the  Company's
discretionary  right to accept or reject the subscription  herein in whole or in
part,  and  the  Subscriber  will  be  promptly   notified  as  to  whether  the
subscription  has been accepted.  If the Company shall for any reason reject all
or part of this Subscription,  the amount paid by the Subscriber with respect to
the rejected Subscription,  or part thereof, will be refunded, without interest.
Acceptance  of  this  Subscription  by the  Company  will  be  evidenced  by the
execution hereof by an officer of the Company.

         3. Subscriber  Representations.  The Subscriber  hereby  represents and
warrants that:

                  (a) The  Subscriber's  representations  in this  Agreement are
complete and accurate to the best of the Subscriber's knowledge, and the Company
and any sales agent may rely upon them. The  Subscriber  will notify the Company
and any such agent  immediately  if any  material  change  occurs in any of this
information before the sale of the Shares.

                  (b) The  Subscriber  is able to bear the  economic  risk of an
investment in the Shares for an indefinite  period of time,  can afford the loss
of the entire investment in the Shares,  and will, after making an investment in
the securities,  have  sufficient  means of providing for  Subscriber's  current
needs and possible future contingencies.  Additionally, the Subscriber's overall
commitment   to   investments   that   are  not   readily   marketable   is  not
disproportionate  to Subscriber's net worth and this Subscription will not cause
such overall commitment to become excessive.

                  (c) The Shares  subscribed  for herein will not be sold by the
Subscriber  without  registration  under applicable  securities acts or a proper
exemption from such registration.

                  (d) The Shares  subscribed  for herein are being  acquired for
the  Subscriber's  own account and risk,  for  investment  purposes,  and not on
behalf of any other person or with a view to, or for resale in connection  with,
any  distribution  thereof within the meaning of the Securities Act of 1933. The
Subscriber   is  aware  that   there  are   substantial   restrictions   on  the
transferability of the Shares.

                  (e) The Subscriber  has had access to any and all  information
concerning the Company that the Subscriber and the Subscriber's  financial,  tax
and legal advisors required or considered  necessary to make a proper evaluation
of this  investment.  In making the  decision  to  purchase  the  Shares  herein
subscribed

                                       2
<PAGE>

for, the  Subscriber  and his or her advisers  have relied solely upon their own
independent  investigations,  and fully understand that there are no guarantees,
assurances  or  promises  in  connection  with  any  investment   hereunder  and
understand that the particular tax consequences  arising from this investment in
the Company will depend upon the individual circumstances of the Subscriber. The
Subscriber  further  understands  that  no  opinion  is  being  given  as to any
securities or tax matters involving the offering.

                  (f)  All  of  the   representations   and  warranties  of  the
Subscriber  contained herein and all information  furnished by the Subscriber to
the Company are true,  correct and complete in all respects,  and the Subscriber
agrees to notify the Company  immediately  of any change in any  representation,
warranty or other information set forth herein.

                  (g) The  Subscriber  also  understands  and  agrees  that stop
transfer  instructions  relating to the Shares  will be placed in the  Company's
stock transfer ledger, and that the certificates evidencing the Shares sold will
bear legends in substantially the following form:

                  The securities  represented by this certificate have
                  not been registered under the Securities Act of 1933
                  (the "Act") and are "restricted  securities" as that
                  term is  defined  in Rule 144  under  the  Act.  The
                  securities  may not be  offered  for  sale,  sold or
                  otherwise   transferred   except   pursuant   to  an
                  effective  registration  statement  under the Act or
                  pursuant to an exemption from registration under the
                  Act, the  availability of which is to be established
                  to the satisfaction of the Company.

                  (h) The Subscriber knows that the Shares subscribed for herein
are  offered  and sold  pursuant  to  exemptions  from  registration  under  the
Securities  Act of 1933,  and state  securities  law  based,  in part,  on these
warranties and  representations,  which are the very essence of this  Agreement,
and constitute a material part of the bargained-for  consideration without which
this Agreement would not have been executed.

                  (i) The  Subscriber  has the capacity to protect  Subscriber's
own interest in connection with this transaction or has a pre-existing  personal
or  business  relationship  with  the  Company  or one or more of its  officers,
directors or controlling  persons consisting of personal or business contacts of
a nature and duration such as would enable a reasonably  prudent purchaser to be
aware of the  character,  business  acumen and general  business  and  financial
circumstances of such person with whom such relationship exists.

                  (j) This  Agreement  when fully  executed and delivered by the
Company  will  constitute  a  valid  and  legally  binding   obligation  of  the
Subscriber, enforceable in accordance with its terms. The Subscriber, if it is a
partnership,  joint venture, corporation,  trust or other entity, was not formed
or organized for the specific  purpose of acquiring the Shares.  The purchase of
the Shares by the  Subscriber,  if it is an entity  investor,  is a  permissible
investment  in  accordance  with the  Subscriber's  Articles  of  Incorporation,
by-laws,  partnership  agreement,  declaration of trust or other similar charter
document,  and has been duly  approved by all  requisite  action by the entity's
owners,  directors,  officers or other authorized  managers.  The person signing
this  document and all  documents  necessary to  consummate  the purchase of the
shares  has all  requisite  authority  to sign such  documents  on behalf of the
Subscriber, if it is an entity investor.

                  (k)  The  Shares  offered  hereby  were  not  offered  to  the
Subscriber by way of general  solicitation or general advertising and at no time
was the Subscriber  presented with or solicited by means of any leaflet,  public
promotional  meeting,   circular,   newspaper  or  magazine  article,  radio  or
television advertisement.

                  (l)  If  initialed  below,  the  Subscriber   represents  that
Subscriber is an "accredited investor" as defined under Rule 501 of Regulation D
by reason of:

                                       3
<PAGE>

FOR INDIVIDUALS ONLY (INITIAL IF APPLICABLE):

______    1.   I had individual income (exclusive of any income  attributable to
Initial        my spouse) in excess of  $200,000  in each of the most recent two
Here           years and I  reasonably  expect to have an  individual  income in
               excess of $200,000  for the current  year,  or I had joint income
               with my spouse in excess of $300,000 in each of those years and I
               reasonably expect to have a joint income with my spouse in excess
               of $300,000 for the current year.

______    2.   I  have  an  individual  net  worth,  or my  spouse  and I have a
Initial        combined  individual  net  worth,  in excess of  $1,000,000.  For
Here           purposes  of this  Agreement,  "individual  net worth"  means the
               excess of total assets at fair market value,  including  home and
               personal property, over total liabilities.

______    3.   I am  qualified  as an  "accredited  investor"  pursuant  to Rule
Initial        501(a) of Regulation D of the 1933 Act for the following  reason:
Here           _________________________________________________________________
               _________________________________________________________________

FOR CORPORATIONS AND PARTNERSHIPS ONLY (INITIAL IF APPLICABLE):

______    1.   The  undersigned   hereby   certifies  that  the  Partnership  or
Initial        Corporation  that he/she  represents  possesses  total  assets in
Here           excess of $5,000,000 and was not formed for the specific  purpose
               of acquiring the securities offered by Company.

______    2.   The undersigned hereby certifies personally, and on behalf of the
Initial        Partnership or Corporation  that he/she  represents,  that all of
Here           the  beneficial   owners  of  equity  qualify   individually   as
               accredited  investors  under the individual  accredited  investor
               test set forth above.

FOR TRUSTS ONLY (INITIAL IF APPLICABLE):

______    1.   The  undersigned  hereby  certifies  that the trust which  he/she
Initial        represents possesses total assets in excess of $5,000,000 and was
Here           not formed for the specific  purpose of acquiring the  securities
               offered by Company,  and that the purchase of the  securities  is
               directed  by  a   sophisticated   person  as  described  in  Rule
               506(b)(2)(ii) of the Act.

______    2.   The undersigned hereby certifies personally, and on behalf of the
Initial        trust that  he/she  represents,  that such  trust is a  revocable
Here           trust that may be amended or revoked at any time by the grantors,
               and all the grantors are accredited  individual  investors  under
               the individual accredited investor test set forth above.

FOR TRUSTEES AND AGENTS (READ AND INITIAL BOTH STATEMENTS):

______    1.   The undersigned  hereby  acknowledges that he/she is acting as an
Initial        agent or trustee for the following person or entity:
Here

______    2.   The  undersigned  hereby  agrees  to  provide  to  Company,  upon
Initial        Company's  request,  the following  documents:
Here
               (a) a copy of the trust  agreement,  power of  attorney  or other
                   instrument  granting  the power and  authority to execute and
                   deliver the Agreement, or

               (b) an opinion of counsel verifying the  undersigned's  power and
                   authority to execute and deliver the Agreement.

As evidence of the foregoing, the undersigned may be asked to complete a
Purchaser Questionnaire in the form attached hereto, the contents of which are
hereby certified to be correct.

                                       4
<PAGE>

         4. Entire  Agreement.  This  Agreement  contains  the entire  agreement
between the parties with respect to the matters covered thereby, and may only be
amended by a writing executed by all parties hereto.

         5.  Survival  of  Representations.  The  representations,   warranties,
acknowledgments  and  agreements  made  by  the  Subscriber  shall  survive  the
acceptance of this Subscription and run in favor of, and for the benefit of, the
Company.

         6.  Waiver.  No  waiver  or  modification  of any of the  terms of this
Agreement shall be valid unless in writing. No waiver of a breach of, or default
under, any provision hereof shall be deemed a waiver of such provision or of any
subsequent  breach  or  default  of the same or  similar  nature or of any other
provision or condition of this Agreement.

         7.  Counterparts.  This  Agreement  may be  executed  in  two  or  more
counterparts,  each of  which  shall be  deemed  an  original,  but all of which
together shall constitute one and the same instrument.

         8. Notices. Except as otherwise required in this Agreement,  any notice
required or permitted  under this Agreement  shall be given in writing and shall
be deemed  effectively  given upon  personal  delivery or upon  deposit with the
United States Post Office,  by registered or certified  mail,  postage  prepaid,
addressed as follows:

         To the Company:      4778 North 300 West, Suite 200, Provo, Utah 84604

         To the  Subscriber:  At the address set forth beneath the  Subscriber's
                              signature

         9. Non-Assignability. The obligations of the Subscriber hereunder shall
not be  delegated  or  assigned to any other  party  without  the prior  written
consent of the Company.

         10. Form of Ownership.  Please  indicate the form of ownership that the
Subscriber desires for the Shares:

                         -----      Individual
                         -----      Joint Tenants with Right of Survivorship
                         -----      Tenants in Common
                         -----      Community Property
                         -----      Trust
                         -----      Corporation
                         -----      Partnership
                         -----      Other:

                                       5
<PAGE>

                         [Signature Page For Individual]

DATED this ___ day of _______, 2000.

                                          ----------------------------------
                                          (Signature)

                                          ----------------------------------
                                          (Name - Please Print)

                                          ----------------------------------
                                          (Primary Place of Residence)

                                          ----------------------------------
                                          (City, State and ZIP Code)

                                          ----------------------------------
                                          (Telephone Number - Residence)

                                          ----------------------------------
                                          (Telephone Number - Business)

                                          ----------------------------------
                                          (Social Security or Taxpayer I.D. No.)

ACCEPTED this ____ day of _______, 2000.

ONE WORLD ONLINE.COM , INC.

By___________________________________

                                       6
<PAGE>

                [Signature Page For Corporation or Other Entity]

DATED this ___ day of _______, 2000.

                                           ----------------------------------
                                           (Name of Entity)

                                           ----------------------------------
                                           (Signature of Authorized Person)

                                           ----------------------------------
                                           (Name and Title - Please Print)

                                           ----------------------------------
                                           (Business Address)

                                           ----------------------------------
                                           (City, State and ZIP Code)

                                           ----------------------------------
                                           (Telephone Number - Business)

                                           ----------------------------------
                                           (Taxpayer I.D. No.)

ACCEPTED this ____ day of _______, 2000.

ONE WORLD ONLINE.COM, INC.

By___________________________________

                                       7
<PAGE>

                                    EXHIBIT A
                                 PROMISSORY NOTE

$200,000                                                            May 22, 2000

         FOR VALUE RECEIVED, the undersigned promises and agrees to pay to the
order of One World Online.com, Inc. at 4778 North 300 West, Suite 200, Provo,
Utah 84604, or at such other place as the holder(s) hereof may designate in
writing, the principal sum of TWO HUNDRED THOUSAND DOLLARS ($200,000.00), in
lawful money of the United States of America, together with interest on the
unpaid balance thereof at a rate of eight percent (8%) per annum until paid.
Principal and all accrued interest shall be due in full on the third anniversary
of this Note ("Due Date").

         Any payments received before the Due Date shall first be applied toward
the payment and satisfaction of accrued interest, and the remainder shall be
applied toward the reduction of principal. Prepayment of principal may occur
hereunder at any time without penalty.

         Notwithstanding the foregoing, in the event any sums provided to be
paid hereunder, or under any instrument given to secure the payment of the
obligations evidence hereby, is not paid in full when due, the entirety of such
payment shall, from the period beginning upon the date of said instrument(s) and
continuing during the time it remains unpaid, both before and after judgment,
bear interest at a rate of eighteen percent (18%) per annum.

         In the event: (a) petition is filed seeking that the undersigned be
adjudged bankrupt; (b) the undersigned makes a general assignment for the
benefit of creditors; (c) the undersigned suffers the appointment of a receiver;
(d) the undersigned becomes insolvent; or (e) the undersigned undergoes
liquidation, termination, or dissolution, then in any, the entire remaining
unpaid balance of both principal and interest owing hereunder shall, at the
option of the holder hereof and without notice or demand, become immediately due
and payable. In any event, after acceleration of the maturity of the obligations
evidenced hereby any unpaid principal balance and accrued interest shall, until
paid and both before and after judgment, earn interest at a rate of eighteen
percent (18%) per annum. The acceptance of any payment after the occurrence of a
default or event giving rise to the right of acceleration provided for in this
paragraph shall not constitute a waiver of such right of acceleration with
respect to such default or event or any subsequent default or event.

         In the event any payment under this Note is not made, or any obligation
provided to be satisfied or performed under any instrument given to secure the
payment of the obligation evidenced hereby is not satisfied or performed, at the
time and in the manner required, the undersigned agrees to pay any and all costs
and expenses which may be incurred by the holder hereof in connection with the
enforcement of any of its rights under this Note or under any such other
instrument including court costs and reasonable attorneys' fees, whether
incurred with or without suit or before or after judgment.

         Notwithstanding any other provision contained in this Note or in any
instrument given to secure the payment of the obligation evidenced hereby: (a)
the rates of interest, charges, and penalties provided for herein and therein
shall in no event exceed the rates, charges and penalties which result in
interest being charged at a rate equaling the maximum allowed by law; and (b)
if, for any reasonable whatsoever, the holder hereof ever receives as interest
in connection with the transaction of which this Note is part an amount which
would result in interest being charged at a rate exceeding the maximum allowed
by law, such amount or portion thereof as would otherwise be excessive unpaid
principal balance then outstanding hereunder and not toward payment of interest.

         The makers, sureties, guarantors, and endorsers hereof severally waive
presentment for payment, protest, demand, notice of protest, notice of dishonor,
and notice of nonpayment, and expressly agree that this note, or any payment
hereunder, may be extended from time to time by the holder hereof without in any
way affecting the liability of such parties.

                         ------------------------------

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