I accidentally used a "/" in a filename (I know it's invalid), but came up with some interesting results. The file was on a USB attached drive. On the Mac that had the attached drive I could see the filename. I have two MacBooks that are network attached via wi-fi to the drive via a share on the attached Mac, and on one of them I could see the filename, and on the other I couldn't. Once I dropped the "/" it became visible to the one that couldn't see it. Anyone have any suggestions why one MacBook could see it and the other couldn't? Using 10.6.7 version on all machines.