As you may have noticed, the site is intermittently slow or returning server errors such as 500 server errors, configuration errors, etc. We have contacted the hosting company and it appears that another site on the same server is experiencing a lot of traffic and it is affecting our site as well.
The hosting company has acknowledged the problem and will get it resolved soon. Thank you for your patience.
Edited to add: 8-21-09 We believe the problem has been corrected and that the site has stabilized