Perhaps supermount is picky about the quality of discs. With me the problem occurs frequently but not always (am pretty sure). Tend to use cheap floppies, use them a lot and in several different machines, sometimes Microsoft machines. The problem does not occur with Debian which is not using supermount.

With what OS were they formatted (Win/Linux) or did you buy them preformatted (FAT)? Any connections to this error possible?

Bought pre-formatted, vfat presumably. Having said that some of them were arranged to load Windows into computers - from a factory presumably. Some formated with Msdos and sometimes changed subsequently to vfat. Some formated with Linux as vfat perhaps having been brought vfat pre-formatted.

If this sort of treatment buggers them slightly then perhaps confirmation that supermount is a bit picky?

Well, did you try my above suggestions (post #9)?

I do not use Konqueror.

If one of your points is that it is dangerous to refer to the floppy as /dev/fd0, then that does seem to bugger things often, I agree.

Cannot myself do this experiment - my computers have been seized by US terrorists - but if supermount is the problem then surely switch it of, use mount and umount normally, and see if this resolves the problem.

simple way to turn off supermount or simply comment out the supermount floppy line in fstab - it can then be reinstated in a moment.

Would it be necessary to add say:
/dev/fd0 /floppy auto user,noauto 0 0 (or /mnt/floppy or whatever)
to /etc/fstab ?

Then do:

mount /floppy

Then test to see if problem persists. And something will have been established.

How could I know -- as the first poster specifically mentioned Konqueror? And no, I just found a way to handle floppies with Konqueror, but I don't use supermount.

??? Care to elaborate?