Product review (1 stars): If you own it, check the water temp!
24JUN11: FINAL SAMSUNG SOLUTION TO INADEQUATE HOT/WARM WATER:
The final decision was to 100% refund my purchase cost if I cut off the last 7-inches of the power cord and sent it in along with the sticker that has the washer's serial number on it. Done and done. Now that I know what to expect for temperatures (and if you turn up your water heater you'll get higher HOT temps) I feel $0 is the appropriate cost for this washer.
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PREVIOUS REVIEWS:

This is a review of the white-colored&nbsp;<a data-hook="product-link-linked" class="a-link-normal" href="/Samsung-WF520ABW-XAA/dp/B004CZLSD2/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">Samsung WF520ABW/XAA</a>. Same washer guts, different color.

HOW I USE THE WF520ABW:
- All type of loads: king sheet sets, king mattress covers, big loads of towels, big loads of jeans, small loads of delicates, etc.

WF520ABW PROS:
- Large 5.0ft capacity (why I bought it), gentle as required, ergonomic interface, many cycle selections.

WF520ABW CONS - The following points apply to all 3 brand new WF520ABWs I've had since 1JAN2011. Each with a different manufacturing date. # 3 was manufactured in January 2011:
- The Heavy Duty cycle with WARM WASH/WARM RINSE adds only cold water. The maximum wash temp is 59F.
- No cycle that allows WARM RINSE selection adds hot water to the rinse. All WARM RINSES are maximum 59F.
- Other cycles that do add hot water to their WARM WASH selections have maximum temp of 89F, which is lukewarm to touch at best.
- The maximum HOT WASH temp is 116F, which is warm to touch. The maximum EXTRA HOT WASH temp is 131F, which is hot to touch. Cold water is added to every cycle regardless of temp setting, no cycle uses only the hot water inlet. If I want to wash my clothes in hot water and I select a cycle that allows a HOT WASH or even an EXTRA HOT WASH, I think hot water only should enter the washer... that's why I have my hot water heater set at 141F.

FINAL NOTES:
- Samsung Customer Service agreed with me that there is a problem and authorized a repair on washer number 2. The Bay Area's sole Samsung authorized appliance repair, Jem Appliance (very good people, customer oriented, and knowledgable, BTW) replaced WF520ABW #2's main circuit board and the display board with no change in operation of the HEAVY DUTY CYCLE, WARM WASH/WARM RINSE, so I assume it's a main computer algorithm error.
- As of 17FEB11, Samsung is insisting upon a repair technician for the 3rd washer.
- The place I purchased it (Lowes South San Francisco) have been very accommodating/customer oriented (equivalent to Amazon's fabled Customer Service!), and I highly recommend them for appliance purchase. I am currently in discussions about the next step(s).