First off, let me say that I've been running SETI for well over 15 years, haven't noticed this before and I monitor taskmangler frequently.

OK, I just set up another system running W7-32 but with 8GB physical RAM (It'll get upgraded to -64 soon). I observed the SETI and Einstein @ homes page faulting in tens of millions of hits after only 24 hours. SLIGHTLY less than Explorer.exe fault count. My other box, W7-32, 4GB physical RAM, NVIDIA CUDA capable graphics, after weeks of running generates fewer page fault hits. I upgraded it's hardware, installed 7-64, SETI and Einstein and they both are generating similarly high page faults. FWIW, I also observe the HDD activity light spending a corresponding amount of time ON when the system is otherwise idle.

NOTE: I'm only talking about the BOINC page faults here.

Please help me understand why suddenly I'm getting excessive HDD activity when this wasn't the case previously. Seems to me with more RAM available under the 64 bit os there should be noticeably fewer page faults. I'm fully aware of the standard Virtual Memory rhetoric and, certainly in the case of Winblows I do not accept their lame excuses. (If you've got real memory, use it damitt, stop slowing down my system needlessly. PERIOD!!)

If there's some change done by the OS, what was it and how do I undo it? Short of blowing out winblows from all my systems and switching to a REAL OS (which flavor of linux is recommended easiest to get up to speed on?)

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Are you talking about hard page faults or soft page faults? Hard faults indicate a physical issue with the hardware. Soft faults need more data gathered, such as from Process Explorer.

Have you ran a test on your memory recently and/or is it overclocked or overheating?