PM's/avatars/subscribed threads all deleted?
 

Starting this morning, the PM's and avatars and subscribed threads for almost all the regular users (not mods or admins) are deleted on my forum. Even worse, some people can now not even receive new pm's even though their box is empty. Can anyone help me figure out what's going on

Are they really deleted, check in the database.
Check your moderator logs, maybe you have a staff member gone wild.
"People can not receive PM's" Why? Do they get an error?

It tells them their box is full and to empty it. But they can't because there's nothing in it. I solved this for most members by increasing the box capacity, and then for most, someone had to send them a pm which seemed to reset it, otherwise they still could not send pm's.

Yes they are gone from what I see. All the avatars too.

There is nothing in the mod log.

--------------- Added [DATE]1216152997[/DATE] at [TIME]1216152997[/TIME] ---------------

I should add that some boxes read 0 messages, but some read that they have messages in them but there is nothing there - example "Inbox contains 0 messages.
You have 186 messages stored, of a total 300 allowed."

Seems something went very wrong with your database. I suggest you open a support ticket.