Board crashed again yesterday during the night,after 6-7 hours of perfect stability while I was asleep,running FTP download. From the link KTE posted about stop errors,my error it says the following:

0x0000008E: KERNEL_MODE_EXCEPTION_NOT_HANDLED
A kernel mode program generated an exception which the error handler didn’t catch. These are nearly always hardware compatibility issues (which sometimes means a driver issue or a need for a BIOS upgrade).

So I guess incompatibility with ram is the most probable reason why this is happening.Trying different bios and slower ram timings is the only thing left to do,and after that its either OCZ or GEIL,maybe rather OCZ cause Tony is here