Hi,
My dedicated server acted a bit strange, but now my hosting company is fixing things. They are still busy restarting the server (i think).
But i noticed, on my wordpress websites, all posts are set to uncategorized. Have i been hacked? Which WP files should i inspect more closely?
regards
I would say the database or harddisk failed and your hosting company inserted some kind of backup. Maby there's the category part from your wp table missing or broken thus all posts ended up in the default category.
You can also test it with a different theme just to make sure.
BTW: always a good thing: http://wordpress.org/extend/plugins/backupwordpress/ ;-)