We just blew a disk on one of database machines. No data has been loss, but performance will be degraded until we can switch over to the backup machine tomorrow AM. As a result, login may be slow or blocked during heavy load tonight (which we're mostly through).
We are going to down the grid tomorrow morning around 6am PST and will be back up before noon PST.
We apologize for the login problems and are working to get everything fixed ASAP. Thank you for your patience.