That’s odd. The only thing that the htaccess file in the manager directory does is turn off mod_rewrite. It shouldn’t cause a manager lockup. There’s definitely more than meets the eye here. Check your htaccess file in the root of the site. The only options that should be on and uncommented are the RewriteEngine, RewriteCond, and RewriteRule lines...everything else like the zlib.output_compression and the stuff at the bottom dealing with browser issues should be left commented. If there are any of these that are not commented, comment them and see if that does the trick. If not...back to the drawing board!
If possible, if you’re still having problems, create a PHP file in the root of your site called phpinfo.php and have the following in it:
Granted, the same could be done just by visiting the manager...but this is easier. Now try viewing this file in the browser to make sure it works:
http://www.yoursite.com/phpinfo.php
If it does, send me your URL so I can look at the configuration of PHP on your server. There might be a problem with it that’s causing your site to go nuts.
Jeff