First, I must point out how wonderful my hosting company (Hostdime) is! They responded to me within a few minutes of submitting my trouble ticket and had the issue resolved! I regret spending an hour searching the net and trying to fix the issue myself, Hostdime customer service is excellent!
Here’s the fix that worked for my administrator login on a Joomla 1.5 build:
The following value in my configuration.php file was set to ‘1′ forcing SSL:
var $force_ssl = ‘0′;
Since this account does not have a SSL installed *yet* I cannot force it to use SSL as it will fail.
The odd thing is, I was able to use the site during most of the development before the error occurred.
Hope this helps someone out there in Joomla land.

3 Comments
This helped me in joomla land. Searching the web was not very fruitful until I stumbled upon this!
Great! I am happy to have helped out. I spent some time searching for the answer as well, so hopefully it will help others too.
Sean
Good job mate this woks every time