Comment 21 for bug 160862

Thanks for the files. They seem correct to me. I don't think there's any special problem with your versions of gnome-system-tools and system-tools-backends either.

An interesting hint is that you're using a 64 bits system. It may well be that the GID we send to the backends triggers an int overflow in some way, which leads us to pass 65534 for all groups, which become only one group (just a guess). I'd be interested in the results you can get from https://wiki.ubuntu.com/DebuggingGnomeSystemTools ("For Groups" section).

Also, if you manage to reproduce the problem in a virtual box, that would be very interesting. In that case, you should try with Karmic and Lucid, in which the problem might well be fixed.