Hello, Recently my mac has started freezing whenever I quit an application. I first noticed it with GarageBand, then TenFourFox and then iTunes. When it happens the whole OS freezes, meaning I can't force quit, restart etc. I get the spinning pinwheel and then I'm stuck until I manually shut down using the power button. Any ideas on a cause/fix? I'm considering wiping it clean and reinstalling everything, but that's kind of a last resort. Is there something I can try in the meantime, like deleting preferences or something of that nature? Thanks! P.S., I have a G5 tower. I don't have the exact specs right now because I'm at work, but I can get them later if necessary.