In Admin Panel, Filter posts by category not working

When I am in the dashboard looking at all my posts, and select a category from the drop down, then select “filter, the view reloads, but it still shows all categories.

This occurs with all plugins disabled.

I just now pulled the latest from svn and tried it again, and no go.

The following information is POSTed when I press “filter”:

_wp_http_referer=/blog/wp-admin/edit.php
_wpnonce=xxxxxxxxxx (hidden)
action=-1
action2=-1
cat=5
m=0
mode=list
paged=1
paged=1
post_status=all
post_type=post

Here’s the actual string:

s=&post_status=all&post_type=post&_wpnonce=xxxxxxxxxx&_wp_http_referer=%2Fblog%2Fwp-admin%2Fedit.php&action=-1&m=0&cat=5&paged=1&mode=list&action2=-1&paged=1

So I can see it’s sending the ‘cat’ along with the post, it’s just not doing anything with it.

Thoughts?

Thanks
Peter