I too have these anyoning popups and I do have a mac running leopard.
The mac can no longer print to my PC printer and can no longer see the shared PC drive.
What can I change to fix this?
I've just spent hours trying to fix my computer and my sons, new drivers, complete scans, etc, etc.
Move the mouse 50% CPU.
Turn off BG 1% CPU.
Something happened in the last few days.!!
After leaving PC on for a few days it starts going slow.
It seems to be after using Acrobat reader v7 via IE7.
Also after this both apps wont shutdown at reboot.
Any better way instead of ...