I repeatedly get this message when trying to save SW files (15 seats - 2003SP4.0 and 2004SP0.0 - Win2K Pro - no PDM). Sometimes the files are saved anyway, sometimes they are corrupt and sometimes they are just lost. The problem occures mostly on network (maybe 1 out of 20 saves - imagine a 1000 part assembly) but sometimes on local drive also. I have had the Gaobot worm but identified and removed it (at least I believe so) but this problem keeps comming up. Pleeeeease help so I can get a nights sleep. Thomas Voetmann