[Nexus 4 Q&A, Help & Troubleshooting] rharkanson:
Also checking in with the same issue.

I've haven't had the phone for 4 full days yet and I've experienced "sleep death" twice - both times while charging overnight. The first day I set up most of my apps and topped off the battery, as per recommendation. I also wanted to do a full discharge to calibrate the battery, so it made it through the first night without a charge but needed it during the day. That charge went well as the phone was in use the entire time. However, since I started regular nightly charging, the past two days have resulted in "sleep death". I woke up to a blinking notification LED (which I still assume is an email notification since I did get email and the notification appears after reboot). To reboot, in both cases so far, I just held down the power button until the device powers down (LED stops blinking), then I release and hold again until it powers up. Both times it seems as if the phone successfully charged since my battery level after restart was about 98% both times.

Some extra details, mentions in this thread, as well as some possible causes I thought of:

Updated to 4.2.2 on the first day, so it didn't even charge with 4.2.1

The phone is completely stock and unrooted (so I can stay under warranty in the event issues like this one arise)

Wifi has been connected and left on ever since, including overnight, with 'Keep Wi-Fi on during sleep' set to 'Always'

Bluetooth was only on the first day to set up Tablet Talk with my tablet and hasn't been on since

I was speculating the issue may have been caused by Skype or Tango as they are both talk and video chat apps that have power to wake the screen

I was also speculating the issue may have been caused by the 'Daydream' setting, which was on 'Clock' but is now turned 'Off'. I have only changed that setting this morning, so I will report back with the results of this after tonight's charge

Here are my list of apps as shown from Google Play (Most of which were installed on the first day and I believe Tango is the only latecomer):

Android Pro Widgets
Burger
Call Blocker
Calorie Counter - MyFitnessPal
Chrome
Dropbox
Evernote
Facebook
Facebook Messenger
Gmail
Google Authenticator
GOogle Calendar
Google Earth
Google Goggles
Google Play Books
Google Play Movies & TV
Google Play Music
Google Play services
Google Search
Google Voice
Google+
HD Widgets
Lose It!
Maps
Pandora internet radio
RealCalc Scientific Calculator
Skitch
Sky Map
Skype
SMS Backup +
Sound Search for Google Play
Stret View on Google Maps
Tablet Talk
Tango
Twitter
Voice Search
Youtube
Google Currents
Google Korean IME
Google Pinyin IME
Google Play Magazines Google Wallet

And here is the resulting package list from adb:

package:android
package:cloudtv.hdwidgets
package:com.android.backupconfirm
package:com.android.bluetooth
package:com.android.browser.provider
package:com.android.calculator2
package:com.android.cellbroadcastreceiver
package:com.android.certinstaller
package:com.android.chrome
package:com.android.contacts
package:com.android.defcontainer
package:com.android.dreams.basic
package:com.android.facelock
package:com.android.htmlviewer
package:com.android.inputdevices
package:com.android.keychain
package:com.android.launcher
package:com.android.location.fused
package:com.android.mms
package:com.android.musicfx
package:com.android.musicvis
package:com.android.nfc
package:com.android.noisefield
package:com.android.packageinstaller
package:com.android.phasebeam
package:com.android.phone
package:com.android.providers.applications
package:com.android.providers.calendar
package:com.android.providers.contacts
package:com.android.providers.downloads
package:com.android.providers.downloads.ui
package:com.android.providers.drm
package:com.android.providers.media
package:com.android.providers.partnerbookmarks
package:com.android.providers.settings
package:com.android.providers.telephony
package:com.android.providers.userdictionary
package:com.android.settings
package:com.android.sharedstoragebackup
package:com.android.soundrecorder
package:com.android.stk
package:com.android.systemui
package:com.android.vending
package:com.android.vpndialogs
package:com.android.wallpaper
package:com.android.wallpaper.holospiral
package:com.android.wallpaper.livepicker
package:com.apdroid.tabtalk
package:com.dropbox.android
package:com.evernote
package:com.evernote.skitch
package:com.facebook.katana
package:com.facebook.orca
package:com.fitnow.loseit
package:com.google.android.apps.authenticator2
package:com.google.android.apps.books
package:com.google.android.apps.currents
package:com.google.android.apps.genie.geniewidget
package:com.google.android.apps.googlevoice
package:com.google.android.apps.magazines
package:com.google.android.apps.maps
package:com.google.android.apps.plus
package:com.google.android.apps.unveil
package:com.google.android.apps.uploader
package:com.google.android.apps.walletnfcrel
package:com.google.android.backup
package:com.google.android.calendar
package:com.google.android.configupdater
package:com.google.android.deskclock
package:com.google.android.ears
package:com.google.android.email
package:com.google.android.exchange
package:com.google.android.feedback
package:com.google.android.gallery3d
package:com.google.android.gm
package:com.google.android.gms
package:com.google.android.googlequicksearchbox
package:com.google.android.gsf
package:com.google.android.gsf.login
package:com.google.android.inputmethod.korean
package:com.google.android.inputmethod.latin
package:com.google.android.inputmethod.latin.dictionarypack
package:com.google.android.inputmethod.pinyin
package:com.google.android.location
package:com.google.android.marvin.talkback
package:com.google.android.music
package:com.google.android.onetimeinitializer
package:com.google.android.partnersetup
package:com.google.android.setupwizard
package:com.google.android.stardroid
package:com.google.android.street
package:com.google.android.syncadapters.contacts
package:com.google.android.tag
package:com.google.android.talk
package:com.google.android.tts
package:com.google.android.videoeditor
package:com.google.android.videos
package:com.google.android.voicesearch
package:com.google.android.youtube
package:com.google.earth
package:com.magmamobile.game.Burger
package:com.myfitnesspal.android
package:com.pandora.android
package:com.qo.android.sp.oem
package:com.rdr.widgets
package:com.rdr.widgets.core
package:com.sgiggle.production
package:com.skype.raider
package:com.twitter.android
package:com.zegoggles.smssync
package:embware.phoneblocker
package:jp.co.omronsoft.iwnnime.ml
package:jp.co.omronsoft.iwnnime.ml.kbd.white
package:uk.co.nickfines.RealCalc

I really hope this issue can be resolved soon, hopefully with a system update, and is not hardware related, but I am prepared to call up Google and ask for another unit (as much as I don't want to). I'll give it a few more days, but it looks like Phubai had success by just getting a new phone. I would like to hear back from Phubai to see if his new unit is still functioning properly by the end of the week so I could decide if I want to RMA or not.