Having trouble with Identity Safe.

I log into identity safe and everything is fine for awhile and suddenly the vault is closed again and I have to log in again.  This will happen over and over again.  And it is not because I have restarted my computer or anything.  It is really getting so I am ready to disable identity safe and use the Windows password thingy.  Please help as I do like identity safe when it is working.  When it is not closed it does a good job of filling in my passwords but so many times it is closed for not darn reason.