We have a user who does some design work for one of our remote R&D facilities via our company intranet. After migrating to SW2004, he began to experience over-defined mates on assemblies. Thinking it was something that one of the remote location users had done, he proceeded to fix the mates. A few days later, the remote branch calls up and says "Why haven't you fixed those mates? We just opened up Assembly X, and they're still there." After numerous phone calls confirming that nobody at that location is accessing files, and repeated fixes, this is still occuring. Here is what we know so far: 1. We are using 100% identical SW settings on each end. 2. Corruption still appears if the files our saved within our LAN, and never transferred via intranet. 3. Corruption still appears if the file is saved to local hard drives (on any machine). 4. There is no set time for the corruption to occur. It might not happen for a week, a day, or an hour. 5. It only happens on files involving this remote branch. On average, we generate a gigabyte of new SWX files per week, and none of our internal files are showing the same signs of corruption. 6. The user is very proficient with SolidWorks. Does anyone have any idea what we might have overlooked? I'm leaning toward some level of corruption within the files that occured at the remote location. Thanks, Jeff