I've recently started using a mac for development, and textmate. Textmate can't work over ftp, so I installed transmission to mount the ftp server as a local drive. This all works fine, except every now and again about 10 unknown characters are appended to a file, which PHP reads as unknown input and throws and error.
All I can think of is either that transmission is doing a really crappy job of mounting the disk (but the characters are always added at the end of the file, not randomly throughout it) or that perhaps the file format is strange?
Pic of problem: 
This is what I see when I "show invisibles"