Hi, I have Photoshop CS2 as part of the Creative Suite.  I recently started having problems with it heavily lagging.  I've tried the solutions I've found at the Adobe Forums, but it doesn't seem to work.  I've done three complete re-installs (including the OS, WinXP Pro) but the problem keeps occurring.  I know I didn't have this issue before and I haven't installed anything that wasn't installed before. I should also state that none of the other products in the suite are experiencing this problem.  Adobes' next solutions is to upgrade to CS3.  If anybody has any insight on this problem, please help me.

Computer specs: AMD-FX 55 2.61 GHz, Nvidia GeForce 7800 GT, ASUS A8n-SLI Premium Mobo, Creative XFi- Fatality and 4GB Ram.

Does this occur when restarting it in the same sitting? I mean without turning the PC off and on.
If thats the case then it could be the cache,

Other things that can help is disk defragging, but I guess you thought of that already.

Also, check to see what else is running in the background.

Dhama,
     It happens all the time.  Since my last post I have done even more re-installs.  Defragging didn't help and the file csrss.exe was running taking up most of the cpu.  According to my research it means my profile got corrupted.  I have been installing one program at a time and think I might have found a possible cause.  I have to re-install just to make sure.  I'll post my results here as soon as I have confirmation.

If you have too many undo's set in preferences that will slow you down after working for a while.
I have never had problems with CS2

Well did some more research with the right combo of words and found some indications that a lot of people were having the same problems.  More than less have found it to be with the number of fonts installed on their systems.  I was so hooked on it being an application conflict that I didn't even remember that I did not to long ago install a bunch of fonts (2200).
  I'm tired and bummed out for now, so tomorrow I'll try that and see what happens.  If the fonts are the issue I might have to upgrade to CS3, seeing how that was how most of them cleared their problems and at work we have CS3 and I have over 3500 fonts on my workstation and no problem.  We'll see.

Oh yeah Chris1972, i turned down the number of redos too, it didn't help.  I also played with different memory and cache size, all to no avail:(

Why would you need 2200 fonts installed? Get yourself a font navigator to view, install, and uninstall fonts as needed. I have somewhere around 20,000 fonts. I never have more than 800-900 installed at any one time.

Dreamer101 I had no idea it wasn’t common practice to install all your fonts at once. But I do now. BTW which font manager do you use?

I use Bitstream Font Navigator. It comes with the CorelDraw Graphics Suite. It's very handy when you have a ton of fonts. Draw and drop to install and uninstall. I am constantly viewing fonts.