My site has been running for 6 years with no problems until now.

Here is the problem. Every time I do ANYTHING (post to forum... update module... edit blocks, etc.) It leaves a blank! For instance if i post a reply it shows my avatar and post box but there is no post shown.... If I update a module (say newbb for example). It says it updates it and shows all of the things being inserted... but then on the modules admin page you can see the picture of "forums newbb" but the name where it normally says "newbb" under it is blank. If I edit a block... once i submit the changes.. The block title, block contents, everything is blank as if it's being erased.

I figured out what was happening by backing up the blocks table in the database and just restoring it after it had made it blank.

Does anyone have ANY idea what is going on? Please help if so. Thanks.