appreciate your opinions - am I being uneccessarily worried about stability?

I can run a 200pass of Linx (768MB, 10000) simultaneously with a prime95 blend or lrage calculation for 12 hours. No stability problems.

Moving Linx to a 4096MB test (problem size 23000) I can not even complete two passes - it always fails on the second calculation regardless of how much power I put in to the CP, QPI, mem, slacken timings etc. This is at 19x205.

Am I being too harsh - and can anybody else with an overclocked rig circa 4ghz run a 200 pass on a 4096MB (23k) or greater problem size?

thanks in adv
Ian

PS Congrats on the 100 pages :-)