This new version fixes the problems that were introduced on March 30 when we migrated our database to a new server. Some change we made at that time caused the version of PHP we were running to start crashing sporadically. We have spent the last two weeks updating our code to work with the latest version of PHP, and it is now stable again.
I apologize for the recent problems, and thank everyone for their patience during this troublesome upgrade.
Resolved as of 2009-04-16 17:04:00