I have a problem i tried to verify my disk so i can repair it. i do this regualary and it said there was a error. and now my 2.0 g5 imac is running kinda dodgy. Should i backup and reformat? ( if so whats the best software to copy my whole hd and apps over to and reinstall?). any help i hate to have my macs sick i want them running good all the time.