Hey, please can anyone help me? My mac has been running really slow for ages. I downloaded an upgrade 10.3.8 off the apple site and tried to install it, however it said it failed to install and now my computer just will not start up! Ive tried repairing the disk in disk utility using the restore dvd, I've tried the hardware test, I've tried restoring the system from the disk, but it keeps saying failed. The problem is I havnet backed anything up yet, so Im scared to reinstall the system. Won't I lose everything?? I don't have another mac to transfer my files through firewire, think thats what its called! Can anyone help???