!? This is not good. I can't see how this is happening, tho. When the PM is sent to different folders, then the file itself is modified. (It just adds a hash to it, nothing else) But for the most part, yes, this is mostly a template hack. The install changes little in the ubb files. Nothing that would interfere with the process of writing to files.
To sort out the basic questions: What UBB are you using and what hacks have you installed, please?
