Hi! I don't know if this is a problem, but all the bodies of killed characters in game just don't dissapear. I have a couple of mods installed. Any help? Thanks in advance.

What kind of mods are you talking about? Normally the bodies should dissapear only after they respawn. But you can try this mod:
http://www.tesnexus.com/downloads/file.php?id=4139

It let's you "delete" the dead bodies with the help of a spell. Make sure you read the description so you know where to find the spell.

Cheers

Ok, , that should do it.