This may be related.
Using Jaunty Kubuntu kernel 2.6.28-8-generic #28-Ubuntu SMP Fri Mar 6 00:09:20 UTC 2009 x86_64 GNU/Linux. gvfs version 1.1.8-0ubuntu1.
Open Dolphin (version 1.2.1). Click on PC Floppy Drive (with floppy in drive). Get the error that the floppy is already mounted, but unable to view floppy files (see attached screenshot).