Im still testing:

unlinked
FSB 1750
Mem 1600
888-21-2t

CPUvoltage 1,35625 / 1,325
LLCalibration enabled
p1 p2 enabled
CPU PLL AUTO
CPU VTT 1,22 and 1,26
MEM 1,90
NB 1,46 and 1,50
SB 1,5 and 1,60

GTLREf 0 +42
1 +39
2 +39
3 +42
NB GTL +40

FAILURES in memtest86+v.201 (Test Nr.8) !!!!!!! AAAAHHHHHHRGGGGG!!!
ANY IDEAS? Is it possibly a bios issue?