I am at a loss.

Seems just recently our databases are running at a snails pace.

Wasn't my idea, but our system is FMS 5.5 v4 on 10.3.3 XServe and the files are on a XRaid. Everything has been running really well for about two weeks, in fact faster than our previous set up. But now using the databases takes a really long time and everyone who uses them can't get their work done, etc etc.

Any common problems that I'm overlooking?

Well!

I figure this out well enough. From talking with the folks that use the databases, some of the databases were fine, just a few were slow. Turns out "rebuilding" two of the big ones that the other were looking at fixed it.

A good lesson in FMS rules. I had to open the databases after rebuilding them. It also explained why they weren't backing up to the back up drive successfully.

I dont know, however, what caused it.