What else is going on with your reports? Util increase, new collection posted, etc.
I can see one card doing this for no explainable reason, but for three cards to do this, something's going on. You need to check your reports if you aren't aware of a significant change on a separate account.
* Credit is a wonderful servant, but a terrible master. * Who's the boss --you or your credit?
FICO's: EQ 781 - TU 793 - EX 779 (from PSECU) - Done credit hunting; having fun with credit gardening. - EQ 590 on 5/14/2007