At 5:10PM SLT (US Pacific) the Second Life grid suffered an unexpected subsystems failure, resulting in the disconnection of approximately 7,000 of the 45,000 users online at the time.
Users report problems with assets, inventory, simulator border crossings, teleportation and group IMs. As of 5:45PM SLT, problems seem to be easing, but no acknowledgement or notification from Linden Lab at this time.