I'm sure there is something very basic I'm missing here, but suddenly I can't copy and paste anything. Not using command c and v, not from the menu of any app. Also, I can't select anything and drag it. I wanted to drag my mail inbox contents to a Not Dealt with Yet folder but couldn't do it. I have a 12" PowerBook rev.b 1 GHz, 768MB ram, up to date 10.4.6. I repaired permissions, and reset the pram. Any suggestions?