Once in a while when sending postscript files into the watched folder, the .ps file and the PDF disappear. After several occurences, I searched for the file that was trying to PDF, and the .ps file gets mysteriously placed into the user's .trash file. (which is not even accessible, so the .ps file is virtually lost). Does anybody know what causes this?

And just for more information, we are using Acrobat Distiller 6.0.2 on Mac OSX 10.3.4. The computer is a G4 with 448 MB Ram, but it is only running Distiller and no other applications. The printer is a Xerox Phaser 5400.