Hi Stumpy,
I haven't gone through and read all the posts about your problem, so I am not sure if you have done this step or not, but wanted to ask.
Did you go and delete the cookies for dukewayne.com or did you just delete you browser history?
Just in case, to delete the cookies for dukewayne.com open firefox, select tools, select options, select privacy, select show cookies, scroll down until you see dukewayne.com, select the folder and click remove cookie.
After that make sure you have cookies enabled, go to dukewayne.com and log in, selecting the remember me check box.
I am almost positive that your site cookie is corrupted.