Comment 49 for bug 1054414

@ Adam Funk

That is caused by the new udisks used in Quantal, and has nothing to do whether you have a floppy or not.
It is told here that it will be fixed in the next Ubuntu 13.04 release.
All Ubuntu Quantal derivatives or distro's using the same udisks have the same problem.
We just have to be patient for some more months.
Till than: try to blacklist your floppy; perhaps that stops it.
Otherwise: downgrade to Precise until the 13.04 arrives.