I think I really screwed the pooch on this one. Went to install/upgrade to Jaguar on my iBook. It was taking a really long time, I left and came back and there was text on the screen....looked like it was over the background somehow. The last line, of what looked like some serious deep level code stuff, read "kernel panic" lock-up. Couldn't do anything. Had to take the battery off to shut it down. And I can't boot from the cd...but I don't think I'm doing the right thing. The same screen with the kernel stuff keeps coming up after I turn it back on. Anything I can do to at least get 10.1.5 back up? Thanks in advance.