Ok, I posted yesterday about my Front Row corrupting which someone replied to. Today I had another strange issue while using Safari. The site I was accessing (Bebo) was refusing to load, so I was clicking "Stop/Refresh" on Safari because, being honest, I'm impatient. Anyway, after doing this a few times the spinning beachball came on screen. When it disappeared, nothing on the desktop responded. The dock's magnification was stuttering when I ran the cursor across the dock from left to right and vice versa. I tried to turn off Airport by clicking on the icon on the taskbar, but got no response (ie: the symbol didn't highlight blue as normal when you click it). I then tried to launch the Dashboard using my shortcut (clicking down on the scroll ball) and again, nothing. Then, about 30 seconds later, everything I tried to do above happened at once. When I finally got Airport switched off and the Safari window closed, even on the bare Desktop everything was sluggish. Dashboard took ages to load, and double clicking folders in the Finder took longer to open. Even running the cursor along the dock led to sluggish stuttering magnification. When I reset the iMac it went back to normal, so I think it was me messing with Safari that crashed it, but why would it continue to act like that once Safari was closed and Airport turned off? Combined with yesterday's Front Row "issue" I posted about, I'm somewhat concerned about my GPU although after running the extended Apple hardware test there was no problems found. Did I maybe overload the memory? I'm at a loss. Thanks.