Login page reloads within itself after enabling Clean URLs

Thank you for your reply.

Being something of a newb, however, I cannot glean, either from your reply or from the #932636 link, what if anything, I should (or can) do to "fix" my situation.

Do I simply need to enable the Apache Rewrite module? Is that a difficult thing to do?
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Actually I just checked with cPanel support... mod_rewrite is, in fact, enabled.

Any other ideas re what's going on here and/or how I might be able to fix this?

Recursively loading screen

http://screencast.com/t/Qcu7mHPLG0dm

Any other guesses as to what could cause this?

http://screencast.com/t/Qcu7mHPLG0dm

I have been told:
"The apache rewrite module is always active on a cPanel servers and it cannot be disabled."

Clean Urls module is not the culprit.

This problem happens any time the visitor browses to a url that is:

a. not a legitimate location, and
b. ends with a trailing / (forward slash)

So,

http://www.plain-english.com/junk would be ok (it just triggers a 404), but
http://www.plain-english.com/junk/ would not... it triggers the avalanche.

Also,

http://www.plain-english.com/goldmine-software-learn-about-purchase/
works fine with or without the trailing backslash, as it is a real page.

Resolved. Problem tracked to error in some custom php scripting. Not related to cleanurls at all.