I'll be doing some work on Wikipedia's servers today. So, the site may be unavailable from 2:00pm-5:00pm Pacific time.
The work I am performing is not a part of our ongoing growth plan. It is more of an emergency response to the current problem. A larger-scale upgrade will be coming in the next month or so...
Sorry for the trouble. Thank you for your patience.
wikipedia-l@lists.wikimedia.org