Hi,
That's good to hear. It have also simply been chip-creep with your old RAM, but if you already at a time took the memory out and re-seated it, I doubt it. Compatibility issues are also a possibility, but Memtest shows that in errors. An error in Memtest doesn't always mean faulty memory (more than generally it DOES), but it can also be because your memory isn't at the proper voltage, timings, you name it.
Anyway, keep me updated since swapping out the RAM.
Regards,
Patrick
