no gui (gnome) after update - specified group 'plugdev' unknown

view story

https://bbs.archlinux.org – While looking at the solution to this error (that I have too) :gsd_wacom_device_get_device_type: assertion `GSD_IS_WACOM_DEVICE (device)' failedI found that my problem was coming from "gnome-settings-daemon", when it's called my gnome session goes blank.I tried to downgraded it from 3.8.3-2 to 3.8.3-1 but still it doesn't work..I tried to downgrade most of my packages from today's upgrade (all of them expect gvfs, make, linux) ... nothing new... olivarch https://bbs.archlinux.org/profile.php?id=67760 2013-07-08T20:55:36Z (HowTos)