...I tried updating my 10.5.1 Leo install using the apple combo update procedure, where you delete the kexts after install. Well, my install went to 18% and I got a kernel panic. I didn't want to update, but my Internet kept dropping every 2 minutes so I figured I'd give it a try. So now I've reinstalled Leo from iatkos 1.0ir3. I was getting so many kernel panics that I decided to replace the current extensions folder with my backup. I deleted the new extensions folder and copied my old one to the install. Now, I don't think I get kernel panics (I have been booting with -v), but the boot just sits at: kextd [#]: iokitwaitquiet() timed out while trying to write kernel symbols And then after that I get another line saying interfacenamer timed out waiting for iokitwaitquiet to quiesce. I've searched for three hours on every site I could find, and can't find any solutions. It's driving me absolutely insane. So can anyone here tell me what's wrong, or at least point me to a helpful thread somewhere? Thanks.