You've hit something other than the boards limit i think. Mine runs fine at 148 mhz, above that the ram craps out...You might also check your northbridge heatsink, my first A7V133 <died due to an unfortunate mistake during a removal of my PAL 8045> had its Northbridge fan die one day due to it being a crappy fan, however that board did hold 140+ FSB fine still...
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-Mike
Main: i7 950, EVGA Classified, 3x4gb Ballistix, 4870x2 @ 852/1000, 2 x 128gb Mushkin IOs, Dell S2309W, EK Supreme HF/MCP655/Koolance 487x2/PA120.3, TX850
HTPC: AMD X4 630 @ 3.1GHz, Prolimatech Samuel 17, M4A88T-M, 8GB DDR3 1333, HD3450, 2x1TB, Ceton InifiniTV4, Silverstone GD05B case
Gateway P-7805u FX/Gateway LT3119u w/ X25-M 80gb
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