Ok, here is an additional update...
I disabled JavaScript on Firefox, and then went to /store/ss/start.cgi
I then went View Source, and I copied and pasted the entire source into a new file called start.html
I then re-enabled JavaScript and go to the new start.html file instead of start.cgi file to login, and I have NO problems at all (and it even loads noticeably faster), so it must not be JavaScript related as I previously mentioned.
The only thing I can think of, is that it might have something to do with how our webhosts server is handling .cgi files? But I don't know how to trouble shoot that yet... will keep you updated!