And again, an update. This one might be the one to fix the cold boot problem (as i see it's fixing memory compatibility). Fingers crossed:

BIOS 1801 released June 7, 2010
http://dlcdnet.asus.com/pub/ASUS/mb/...-ASUS-1801.zip

Description (ASUS):
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[ 1801 ]
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1. Improve memory compatibility
2. Improve system stability