Hi I encountered the same problem, so I'm attaching the debugging logs you mentioned.
User in console #1 (gvm.1.log) is running in the foreground, while the usb device is inserted. It is mounted to user #2's console (gvm.2.log). The info requested in the wiki: $ id (#1) uid=1000(haggai) gid=1000(haggai) groups=4(adm),20(dialout),24(cdrom),25(floppy),29(audio),30(dip),40(src),44(video),46(plugdev),100(users),109(lpadmin),111(scanner),114(admin),1000(haggai) $ id (#2) uid=1001(shoshan) gid=1001(shoshan) groups=4(adm),20(dialout),21(fax),24(cdrom),25(floppy),26(tape),29(audio),30(dip),46(plugdev),100(users),111(scanner),1001(shoshan) $ id hal id: hal: No such user $ id haldaemon uid=106(haldaemon) gid=110(haldaemon) groups=110(haldaemon),24(cdrom),25(floppy),46(plugdev) $ uname -a Linux mrblack 2.6.17-10-generic #2 SMP Fri Oct 13 15:34:39 UTC 2006 x86_64 GNU/Linux Thanks, Haggai Eran ** Attachment added: "Logs when a usb device is inserted to a multiuser desktop" http://librarian.launchpad.net/5111500/gvm.zip -- bugs when multiple users are logged into same machine .... https://launchpad.net/bugs/60705 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs