Setting to permit cookies from mudcat won't necessarily get rid of an old corrupt one. If you do the setup to allow mudcat.org, then log out, and then log back in, you should get a new login cookie that should stick.

The drastic step is in IE, Tools, Internet Options, and hit the "Delete Cookies" button, but that will delete all your cookies and you'll have to log in again for anyplace where it's required.

Less drastic, but a little more time consuming, in Windows Explorer you can go to "Documents and Settings," click on your User Name, and then Cookies, where you could go through all your cookies and find the "mudcat" ones and delete just them. This would let you log into mudcat again and get a fresh one that should stick.

After you put the "Always allow mudcat.org" into your IE setup, you may have to log off at mudcat and log back in to get rid of the old crumbled cookie.

John