Yet Another Login Loop

2.6.2 – Can’t log in to the admin section in IE(getting the class WordPress loop with no error at all) but works in Firefox

I’ve:
– cleared cache and cookies, restarted browser, etc.
– changed my ‘secret’ codes
– changed the name of my plugins folder, removed my plugins folder, deactiveted all plugins
– changed my admin password
– double checked my site url and home in wp_options through both the admin interface (in FF) and the db
– had someone else check from a different machine that had never gone to the site before (fail)
– I am not running a firewall
– Note that WP is definitely processing the login info correctly because if I give an incorrect username or pword it throws an error, however when this happens I also get this error:
ERROR: Cookies are blocked or not supported by your browser. You must enable cookies to use WordPress.
– Cookies are, of course, enabled

By rights if I look at Temp Internet Files shouldn’t I see a cookie from my domain after attempting to log in? (Cuz I don’t). What would prevent WordPress from dropping a cookie?

This is ridiculous………