We are updating to a new version of the Linux kernel on VM hosts and need to reboot all hosts. The reboot is scheduled for Saturday, 2013-10-05 between 21:00 and 23:30 CEST (19:00-21:30 UTC). During this period, expect one or several short service interruptions. We try to minimize outages but during a reboot of the hosts, the virtual machines must be restarted as well. We apologize for any inconvenience.