I update systemd to 37-19.fc16, and with this update reboot or shutdown are very long (1m30s). I downgrade to previous version, the 36-3.fc16, and my computer reboot or shutdown normally (between 2 and 5 seconds). what's happen ?
First try the systemd version that's in updates-testing (https://admin.fedoraproject.org/updates/FEDORA-2012-8164/systemd-37-25.fc16) yum --enablerepo=updates-testing update systemd\* If the problem is still reproducible, follow these instructions to produce a debug log: http://fedoraproject.org/wiki/How_to_debug_Systemd_problems#Diagnosing_shutdown_problems
Thank for your fast reply. I install systemd-37-25.fc16 from update-testing, and shutdown or reboot work well (2 to 5 seconds). Thank you, you can close this bug.