X won't start after emerge --world update

i have been successfully running gentoo and Xorg on my 15" aluminum powerbook for quite some time now. however, after i ran emerge --update world a few days ago, X refuses to start up. i tried recompiling my kernel and going over my xorg.conf file, but can't find anything amiss. when i run startx,

Re: Powerbook6,8 issues

i have been successfully running gentoo and Xorg on my 15" aluminum powerbook for quite some time now. however, after i ran emerge --update world a few days ago, X refuses to start up. i tried recompiling my kernel and going over my xorg.conf file, but can't find anything amiss. when i run startx,