Just a thought:

Whom of you guys with the choppy mouse is using Firefox as their main browser? I had those problems too, i stopped using Firefox anx anything releated to it (i.e. Thunderbird) and i had no crashes for 2 days (47 hours uptime). Could it be related to Firefox?

That's what I was thinking originally but someone said they don't use it just Safari and still had the problem.

idlehalt seem to do the trick. but the problem is that my CPU fan is controlled by OSX and it doesn't want to speed up, so I gave up with this idea. Will try with single-core boot.

Just thought I'd chime in and say I made the move over to Intel
I needed to get serious, and working with an AMD felt like playing with a little toy. I'm not sure what my experience will be like with this new setup, as I've only just put it all together, but I installed from the Retail DVD, replaced a few kexts, and it's running beautifully so far. Just to give a little perspective:

AMD 3800+ (2.0ghz stock)
1GB 400mhz RAM
Nvidia 8800GT 512MB
---------------------------
xBench score = 116 (at best, with no disk test)

Intel 6750 (2.6ghz stock)
2GB 800mhz RAM
Nvidia 6200TC 64MB (old school)
---------------------------
xBench score = 230 avg. (no disk test)

I'll be testing out my new system with the 8800GT later, but will probably keep the 6200 in it just because I still want to use my AMD for gaming. Also, I may be swapping out the E6750 for an E8400 in a few days. Either way, I really can't complain about a 100% performance increase.

Welcome to the new club lol.
I wouldn't mind seeing your xbench scores, what mobo did you buy?

Hey Ian, no prob bud. I'll send you a bunch of different benches at insanelymac after I am finished doing some tests today - don't want to mix too much Intel talk over here, hehe. I'll be trying out AHCI vs IDE, time machine tests, may possibly swap in the 8800GT, and also might try out the 9.2.2 hacked kernel. At the moment, I am using the retail 9.2.2 kernel and it works really well! I get shutdown/restart, but I haven't tried sleep yet. See you over at insanelymac.

EDIT: Wow! Sleep works, and wake works with power button-tap!! So I have a 100% working retail/vanilla system.

Same here, i'm going to say bye bye to AMD soon. I'm tired of having a not perfectly running OS since i need to work with it. It's not just some fun. I know, some ppl might say "then use another, stable OS". Anyways, my decision is to use Leopard so i do whatever is necessary to get it stable (except buying a real and overpriced Mac).

So i've ordered the same hardware lanxxx got:
Gigabyte GA-EP35-DS3R
Intel Core 2 Quad Q6600 4 x 2,4GHz
and 4 Gig Kingston HyperX 2 GB Kit DDR2-1066

I'll give it a try with 4 gigs, i'm sure it'll work =) At least i hope so ^

yeah 4 gigs will work, i think. i only have 2, but one of the guides i read for DS3* boards said there's a way to get it to work. just can't remember right now i'm with you on the importance of a stable system. i have a feeling that a good number of people on these forums either don't run anything demanding on their systems, or they just don't use their systems enough to notice the issues we've been having. but, hell, i'll keep running my AMD as a hackintosh with Tubgirl 10.4.10 ... but that's about all it's good for in the hackintosh realm. :\

When I use vanilla kernel shutdown only works now and again what release etc. are you using? I can't find a hacked 9.2.2 kernel, or do you mean the one thats floating round this forum?
also subsonic if you get board with ICH9R then I don't think you have a problem if you get board with 9ICH then you need to use the new driver for it.

I'm going to put my 2 cents out there, I have been looking at this problem for this past 2 weeks and I've carefully monitored the work load on my pc. What I found was I don't have the performance bog monster until I play about 2 hours of warcraft 3. After that you can clearly see the Warcraft 3 menus moving up and down sparaticly, at that moment everything goes glitchy and mouse movements crazy that exact moment when warcraft 3 for me hits the crazy menu bars movement is when the bogging starts. That's all I really know from now but I can maintain a controlled environment, until I get into warcraft 3, warcraft 3 is a guarantee catalyst to the problem. It's the only application that can cause the mystery system bog monster :P. Hope that helps somehow.

My Specs;

Asus A8N-SLI Deluxe
2GB Patriot Dual Channel 3-3-3-8 Ram
AMD Opteron 180
8800GT

I'm all for someone brilliant fixing this problem!