Sure do hope that's either a typo or the voltage monitor set incorrectly! If that really is your 3.3V rail, you just found your problem.
An FYI on the Samsung PC2700 memory - it likes VDimm in the 2.8V to 2.95V range and easily runs much higher than your at with 2,6,2,2 settings. Other comment is there are some "no-name" DIMMs out there that use the Samsung memory chips that stink because of the poor PWB design.