UBB.threads PHP Forum Software Community Forums UBB.threads 7 Version 7 Support Config file rewritten with 0 bytes

Several issues could cause it.
One the server did it. Due to over quota bad connection,etc.
Two there is a known bug that will cause it under certain conditions identified by SD. And should be addressed in the next release if that happens soon
Third somebody hacked your site and wiped your data.

First item ,What version are you using?
Do you have a release with the security patch installed?
If not then do so.
I would also start checking your server logs and see if something shows losts connections on a regular basis,Constant errors such as over bandwidth or most important over storage space
Then I would start looking at the hard part
Meaning looking for script files that don't belong. Which would be a clue you have bee hacked.

Also don't forget to double check the ftp file/folder permissions i case they got changed