I have USB 1.1 and 2.0 both enabled as well. At one point when I was experiencing this problem, I switched to 1.1 only in BIOS, and it did not help. I just checked, and USB mouse support is already disabled in BIOS. I did notice a third BIOS option about USB memory. I'm not really sure what that is for, but I tried switching it from Shadow to 640K.What do you have for BIOS settings USB wise?..I have both USB 1.1 and 2.0 enabled in BIOS.
One thing I have USB Mouse support disabled in BIOS.
brzrkr0, i tried some of the settings you mentioned for overclocking. they wouldn't work for me, even at 2T. with my system i found that when trying 2 G, 2.2, and 2.4 Ghz, i got the best 3dmark score with only 2 Ghz. sounds odd right? of course my cpu score went up though. at 2.4 and ddr400 my cpu temp got up to 50 C (smartfan set at 50) and vcore up around 1.6 v on auto. so i'm sticking with 2 Ghz for safe measures and the only thing i have to change is the fsb.
That does sound odd. I didn't do any serious performance testing (just stress testing) in between 1800 and 2520 mhz, but I did perform "before" and "after" tests. My 3dmark01 score went from 19000 something at 1800mhz to 24785 at 2520 mhz. 3dmark03 went from I think 12-13000 (forgot to write that one down) to 15281. and 3dmark05 went from 6868 to 7146.
According to USDM, vcore (set on auto) idles at 1.602-1.612, with cpu temp at 32-35 degrees and video card temp at 39-41 degrees. Under load from prime95, vcore drops a little in USDM (I see 1.573 after a few minutes). I've seen the cpu temp get as high as 45 degrees after many hours of prime95. Vdimm (set at 2.9 in BIOS) hovers around 2.95 in USDM, both idle and under load. I see comparable idle temp and voltage numbers in BIOS as well.
Note that I have had no stability problems at these settings aside fromt the mouse problem.