The gnome volume manager should not be configured with --disable-multiuser if sys-auth/pambase is installed with USE=consolekit. Multiuser support is needed for proper handling of USB mounting when multiple users are logged in.
Created attachment 168700 [details, diff] Proposed patch
unless we badly read the code back then (configure.ac), multiuser has nothing to do with consolekit, it used pam_console which is completely different.
fixed in 2.22.5 without a bump. g-v-m actually uses consolekit now for this and falls back to the old way (pam_console) if it can't chat with consolekit. I didn't add pambase check because absence of it falls back nicely. If user changed this on a per package basis, well he/she got what he/she wanted I guess.
