To Mac Geniuses --- Sticky mouse problem

I have a friend from bucketworks that seems to be a fairly advanced Mac User, but is not a general computer geek. A few months ago she got a new mac book pro for most of her computing needs but then wanted to get her old iMac to sit in the living room to play music. After formating and upgrading her iMac to 10.8, and installing iTunes everything seemed great. However, once she started using iTunes and installing some of her old music files on the iMac, her mouse cursor began to stick for sometimes days at a time. Being the pc dork that I am, I am unable to help any further. I did not know if anyone here would know what this could be related to.

At first I thought it was a memory thing, but she has 1gb of ram.
Then I went for HD spooling problems, but she has a 200gb drive and its half full. Next I went after the CPU being slow, but since the mouse sticks for days this is not just trivial lag.

The only thing I can think of at this point is some driver bug.

What is the next thing to test?

I had the same problem on my

I had the same problem on my MAC but a software update cleared it. I suggest you try it as well. My computer's configuration is slightly lower than your friend's so I guess the hardware is not the problem.
---
Mary-Anne Davis, dezvoltare software affiliate.

I'm assuming you tried using

I'm assuming you tried using another mouse already? Is it the standard Apple mouse that came with the Mac?

You said 10.8 but I'm guessing you meant 10.4.8? Be sure to run Software Update since 10.4.9 is the latest right now.

What model iMac is it? If it's a G3 I wouldn't doubt it would be slow it doing things, but honestly, a mouse/cursor getting "stuck" for more than a few seconds is not something I can recall seeing.

If you put in the install CD you can boot from it, and run Disk Utility to check for problems. It would also be interesting to see if the problems happens when booted from the CD.