Categories is listing the population of deleted categories.  Example: i create a poll in my Best category.  I delete said poll.  Categories will still show on the home page and in the categories home page that there is something listed.

Conversely, I have music and videos in categories but there is nothing showing in the categories listing showing something in there.

Please can you check on this problem on this demo:

http://demozzz.com/dolphin7b/

Yes the bug appears there.

I created a poll in the best category, answered it and promptly deleted the poll

If you go look in the categories block on the front page and click on poll categories you see Best(2) but when click it only one poll shows up.

Even in the categories listings here: http://demozzz.com/dolphin7b/categories.php  and click on Polls y ou see Best(2) but only one poll in there.

So I can manipulate that problem by making polls and deleting them.

Hello ticket was added : http://www.boonex.com/trac/dolphin/ticket/1505#preview