Okay, I just took a moment to study the screenies you posted earlier.
Now, if I'm not mistaken, shouldn't the HT speed on AMD's be around 2000, rather than around 1000? It's been awhile since I ran one (939 days) and back then, 1000 vs. 2000 didn't really make difference in performance, but ... it's at least worth fixing in any case.
Maybe someone else with an AM2 will tell you something different, but if the same rules hold true as they did back when I was running AMD, what you'd do is go into your bios and make sure your HT multiplier is set to 5, then check CPU-z again and see if your HT doesn't go to 2000.
As I say, I doubt it'll cure your issue, but it's worth trying/fixing in any case.
ON EDIT: Nevermind, it looks like it works like DDR, basically 1000 in cpuz = 2000. Plus it appears your multi must be 5, now that I scrutinize the numbers...
One more thing: When was the last time you grabbed the latest BIOS and flashed your Mobo? I've seen that work miracles in my day ...
Edited by brettjv - 7/10/08 at 6:26pm