Last night the screen on my iBook was flickering on and off for about 30 seconds or so, but it stopped and seemed to be fine, so i didn't think too much about it. this morning iChat crashed for no reason, so i restarted, and it wouldn't get past the "starting OS X" screen with the white box and apple logo. the progress bar is all the way filled but it won't load the OS. i've repaired permissions within the last week, i performed the apple hardware test and it said that everything was ok. same thing with fsck -y, it found some problems but fixed them. should i reinstall OS X? can i do this without reformatting and losing all of my data? i can't figure out what's wrong with this thing for the life of me. thanks in advance.
