Urgent help needed: Members can't log in.
 

I am in urgent of help right now. Some of my members are having problems logging in or staying logged in. Most are complaining that they're having this issue with firefox mainly. I have no idea how to fix this.

Any help would be greatly appreciated.

To troubleshoot this, please remove any hacks and disable your plugins, then see if you still have this problem.
Note: To temporarily disable the plugin system, edit config.php and add this line right under <?php

define('DISABLE_HOOKS', true);

If so, reupload all the original vB non-image files (except install.php). Make sure you upload these in ASCII format and overwrite the ones on the server.

If your problem still exists, please create a new Style with no Parent set. Now browse the forum using this new style, do you still have the same problems? If you are troubleshooting login or guest issues, you will need to set this style as board default in the vBulletin Options.