Session table keeps crashing

[heredia21]

I keep getting these messages:

150703 19:09:33 [ERROR] mysqld: Table './db_forum/forumsession' is marked as crashed and last (automatic?) repair failed

It brings my forums down every time this happens, any idea what would be causing this?

[Mark.B]

Have you tried running a manual repair on it?
REPAIR TABLE forumsession

If that isn't fixing it, it is something you should ask your hosts to look at