for starters, since you own everything, I'd recommending changing the ownership of everything in etc to root, as it usually is. After that you should at least be able to sudo again. sifting through the rest of your system for permissions will be more tricky. On my system there is only one file, mpd.conf, in my /etc directory that isn't owned by root so this should be a good start. If that fails you'll have to start up a recovery cd, like the one you used to install linux to fix the problem.
Last edited by sarum1990; 11-20-2009 at 04:21 PM.