Hi, Each time, if i try to logout, my system freezes. If i power down and restart, X freezes completely, so i have to disconnect from power to restart. So, i got up my system again, an could check the logs, where i found the following (sorry, is translated, my system is in germand): Jun 29 18:12:40 niobe gdm(pam_unix)[2308]: session opened for user gabi by (uid=0) Jun 29 18:12:45 niobe gconfd (gabi-2401): (Version 2.6.0) will be started, Process-ID 2401, User »gabi« Jun 29 18:12:46 niobe gconfd (gabi-2401): Adress »xml:readonly:/etc/gconf/gconf.xml.mandatory« has been made to a readable configuration-source on Position 0 Jun 29 18:12:46 niobe gconfd (gabi-2401): Adress »xml:readwrite:/home/gabi/.gconf« has been made to a writable configuration-source on Position 1 Jun 29 18:12:46 niobe gconfd (gabi-2401): Adress »xml:readonly:/etc/gconf/gconf.xml.defaults« has been made to a read-only configuration-source on Position 2 Jun 29 18:12:51 niobe bonobo-activation-server (gabi-2406): iid OAFIID:BrokenNoType:20000808 has a NULL type Jun 29 18:12:51 niobe bonobo-activation-server (gabi-2406): invalid character '#' in iid 'OAFIID:This#!!%$iid%^$%_|~!OAFIID_ContainsBadChars' Jun 29 18:13:04 niobe kernel: PCI: Found IRQ 5 for device 0000:01:00.1 Jun 29 18:13:04 niobe kernel: nm256: Mapping port 1 from 0x3f09a0 - 0x3fec00 Jun 29 18:13:04 niobe modprobe: FATAL: Error running install command for sound_slot_1 Jun 29 18:13:46 niobe modprobe: FATAL: Error running install command for sound_slot_1 Jun 29 18:15:12 niobe kernel: spurious 8259A interrupt: IRQ7. ...strange...could anyone of these making this? And why can't i no longer just do logout? Thanks for any help! Roger So, i deactivated smb/winbind-authentication, since then, X freezes no longer on the splash-screen. But it is my goal, to authenticate against one single source... btw. i still cannot logout...system begins to shutdown for a few seconds, but stops afterwards this process. Then, i cannot use anylonger the mouse, but Alt+F1 also opens the menues. No further application to get started. Have to power off and restart. Roger