Yes, I know, it seems a lot more natural dropping your coworker's share folder at E: or F:. But Windows' removable device mapping and network drive mapping don't play well with each other.
I spent several hours this morning troubleshooting why a fresh install of Windows XP SP 2 wasn't reading files from a plug-and-play USB camera that works on every other computer in our office. It turns out that Windows Jekyll was saying "What ho, chap, let us visit our network brethren upon every jaunt to E Drive" and Windows Hyde was saying "DURR I PUT USB FILESES AT E: NOW!!! HOORAY THEY IS MOUNTED, LOOK A KITTEN."
If it hadn't been for the Internet, the good doctor's sordid little secret might never have come out. Because, you know, he looks so polished ... who would have expected he could be capable of such scandalous behavior?
Oy ... frickin' Windows. I'm starting to get a feeling I'm in the wrong line of work (MP3 link) for when Vista comes out.
Edited to add: If you like the song link, more goodness here. The one I linked is Jeffrey Hitchen's "Tech Support."