All of my entries are now unassigned from the categories. This is happening on multiple installations on mulitple domains and two mysql databases!! It is only affecting WordPress 2.7+, I have two older installations that are sub 2.7 that are not having issues.
The categories still exist and on the dashboard, it shows the correct count. However, when I go to the categories page, it doesn't show them but shows the paging... I can create a new category and it will show up.
Any ideas? Please, help!