If you’ve been searching for the title of this blog post, then chances are you are either building or maintaining a Drupal site. Most likely, you attempted to login to your site and saw this bit of HTML splashed across the page and in your browser’s title bar. Or an end user contacted you to ask about all the strange characters on the screen. Either way, here’s some information to help you resolve the issue.

The Issue
Users encounter a line of text on the login page, usually starting with something like “0/0” or “1/3”. A similar message will appear in the browser’s title bar.

Cause
This issue arises from conflicts with the admin menu and contributed menu modules. If you have any modules that work with the menu system (i.e. local menu) or breadcrumbs (i.e. custom breadcrumbs), these could be causing the message above to appear on the login.

Fixes
Below are fixes for two popular modules that conflict with the admin_menu.

Local Menu 6.x-1.5
The solution proposed in #4 at http://drupal.org/node/296534#comment-1249599 works when applied to line #74 in local_menu.module. This applies to version 6.x-1.5.

Menu Breadcrumb 6.x-1.1
There’s various patches proposed at http://drupal.org/node/303247. I have personally tested and confirmed that #27 resolves the issue above. (How do I apply patches to modules?)

Finally, you can read more information about this issue here: http://drupal.org/node/279767.