Forumites: I've been having some kernel panics at various times -- however, not nearly as frequently as those who have been suffering from the battery/airport issue -- but finally, this morning, I tried to boot it up from being shut off at night, and kernel panic. I restarted to find that this would not allow me back into OSX at all. I went into the OSX install (holding C), but Disk Utility would not verify the Macintosh HD volume, nor would it mount it after the verification suddenly stopped part of the way through. Holding <Alt>, I can still boot into Windows where it is (far) more stable, but the waving lines return. They disappeared in OSX after the EFI firmware update, the macbook pro update, and the reset of the settings ram (whatever it's called) but never disappeared in Windows. The waves also appear in the OSX install program, but not in the Apple Hardware Test utility. Thinking it was the RAM, I have run memtest (before the full crash) a few times to no avail. (I ran the GUI version, I had no intention of returning to command line on an OS I don't know). Apple's Hardware Test utility ran--also with no incident to report (extended testing). Many of the panics beforehand have come either out of the blue (is ichat so unstable?) or coming back from sleep. On my ibook g3, I was ok with the occasional panic--my drivers were sketchy. Here, I gave my desktop parts to the rest of the family because I intended to make the full switch. My computer is a week 23 build 2.2 with LG screen [part of my fear of replacing it]. At this point, I can't get into my panic.log, but I'm afraid to just reinstall, especially if disk utility has trouble with the drive, I don't want to fsck it up further than it already is. I also have to ask myself: Windows has not locked up on me (I've been using pcs since the 80808) since I've switched--was going to a wise decision? I am a student, and would be in considerably more anguish if I hadn't made a nightly backup last night. Update: Running Disk Utility in the OSX install gives a kernel panic. Now that's irritating.