I was using my iBook, with only Safari open, then I decided to open Mail, but the icon just kept bouncing. So after about 10 seconds, I tried to open Activity Monitor, but the same thing happened there, so I just clicked and held on each icon and selected force quit. I quit Safari and that no longer works either, not does Disk Utility. Help? Also, after a while the icon just stops bouncing, and is using page outs, bc every time I try to open an app, my free space decreases by .01 GB.