logon problems

[drtnsnw 0]

In the last couple of days I have been having a wierd problem. When I logon I get the redirect screen, but then it goes back to the main menu with the please logon box and all threads locked. If I click on one of the threads then it shows my logon, or if I click on the register link it says I am already logged on.

Does anyone know what could possibly be going on???

Thanks

Chris