Was using xp on bootcamp through parallels. software update (on xp) was runnning and i was messing about with the usb and keyboard support on the bottom right of the parallels window. resukted in loss of trackpad. managed to cancel updates and shut down the vm, but as vm was displaying 'now safe to turn off' dialogue i got a mac message saying i needed to restart os x. did this and os x will not load. it doesn't get passed grey apple screen before the same message appears and will not load of install cd either. however windows loads through bootcamp and works fine(where i'm typing this...). any ideas? thanks. edit: was running parallels rc3150.