After installing it last Thursday on my dual 2.0 G5, everything was fine. But now for the past 4 days, I have forced to manually reboot my system over ten times. Safari, Firefox, Mail, Photoshop, and a few other apps CONSTANTLY freeze up and I have to Force Quit them. Sometimes these apps just quit on themselves. When I was running Panther, maybe every 2-3 weeks Firefox or Safari would crash. But now it is almost every 2-3 hours. It's really making me mad! iTunes continues to play music as every other application has frozen or crashed. GRRR! I've already lost many unsaved changes to my schoolwork because of these crashes. Has anybody else experienced these problems this frequently with Tiger? I have not changed anything else except install the new OS, so I don't know why all my apps hate me now.