Ok, I may have found a problem. The measured floating point speed is listed as only 1605 million ops/sec. It should be close to 2400. I'm not knowledgeable of Linux enough to know how to fix it. Perhaps, I do need to run Linux natively and not through a Windows installer (wubi) like I am now.

I'm more than likely going to switch my AMD's to Linux, too. But, my Q6600 is already on Linux and is running slower than my AMD's on Windows. That doesn't make sense.

Do you have a 64bit BOINC Client installed on it?

It's not overheating (and thus throttling)? The CPU does tend to get hotter when running in 64bit mode.

Actually, my computer seems to be running better in Linux now. Vista was giving me problems, hence the switch. I did not go for the full native install of Ubuntu 8.04, it's the wubi version (http://wubi-installer.org/), supposedly better than running a Live CD. And I am running the 64-bit BOINC client and operating system.

I'm more than likely going to switch my AMD's to Linux, too. But, my Q6600 is already on Linux and is running slower than my AMD's on Windows. That doesn't make sense.

Do you have a 64bit BOINC Client installed on it?

It's not overheating (and thus throttling)? The CPU does tend to get hotter when running in 64bit mode.

Linux 8.04 (wubi) 64b / Q6600 @2.4GHz 450 secs
WinXP SP3 32b / X2 4200+ @2.4GHz 385 secs
WinXP SP3 32b / 3400+ @2.4GHz 382 secs
WinXP SP3 32b / XP2700+ @2.2GHz 442 secs

How come my Q6600 is running slower than the Athlons? Zed your's completed in 315 secs. Any ideas?

! of my quads is on linux @ stock speed and is still faster than on Windozescum @ 3.2Ghz
I would suggest maybe you swap at least 2 of those doze boxes to Kubuntu 64 and watch how much of a difference it makes to completion times