Cannot open Parallels Desktop v5. First screen appears, then spinning beach ball. Program requires force quit: "not responding". Uninstalled and then reinstalled; same problem. Using iMac, running OSX 10.5.6; virtual program XP. Permissions OK. Ran Disk Warrior to repair directory. Parallels still "not responding". Ran OK in past, but not now. Anyone offer any help? thanks. RNB