I had been using WordPress 2.2.1 for about a month without problems. About a week ago, I moved it to a new site on the same server (Win 2K3 with IIS6). Ever since I moved it, when most computers visit a page with redirection, a blank page is returned. For example: when you type in http://www.mydomain.com/blog/wp-admin/, instead of redirecting to the wp-login.php page, it just gives me a blank page. There are a couple of computers where the site works fine which leads me to believe it is an issue with settings on the computer, though I don't know what it could be. I have looked all over the internet and everyone who has had the problem seems to say it just magically fixes itself.
Things I have tried to no avail:
Disable all plugins
Upgrade to 2.2.3
I have no custom code, so it can't be that.
Any help would be greatly appreciated.