The udev guide reccomends to emerge coldplug. This should be updated, as of today udev-103 can't be installed when coldplug is installed and vice versa.
""" Note: You no longer need to emerge coldplug if you're using udev version 103 and higher, as udev itself will handle module loading. If you are upgrading to version 103, you must unmerge coldplug (emerge -aC coldplug) before upgrading udev. Be sure to remove the coldplug init script from all runlevels (rc-update del coldplug), and then delete it from /etc/init.d/ afterward. """ Josh: it would make more sense to move it before we actually ask users to emerge it, IMHO :)
Done. Moved higher up. Thanks for reporting, fixed in CVS.