This morning (6:00 EST) the database server went down. The past two days we have been experiencing some trouble with a hard drive on that server. The faulty hard drive has been removed and a replacement has been ordered.
The host has told me to expect the replacement drive on Monday. If it arrives then the site will have to be turned off for probably 30 minutes to install and check the new drive.
I apologize for the downtime and appreciate your understanding in the situation.