Update at 2/18/2010 at 9:45am: All services are back online. Pilchuck and Lummi took a little longer than expected, but all other servers were up by 9am.
On Thursday February 18th from 7am-9am all pre-production servers are to be patched. This means that all test systems may be intermittently or entirely unavailable during this time. Most users will not be impacted, as most users do not have access to preproduction servers. Specifically, the following servers will be impacted: