I just had to reset my cookie..but once it said I had set it, I had to click the 'reload' button, as the browser was loading the cached copy until told otherwise.

Anytime you have to reset a cookie, reloading the page 'may' be required, as well as 'refreshing' Mudcat threads.

If nothing works, Art, you may have some setting that tells it not to accept ANY cookies. This can usually be overridden, allowing Mudcat to set cookies and still excluding most other sites.