This bug affects Lucid Lynx too.
For more info and logs see duplicate bug #475500.
Could someone open two task against Karmic and Lucid respectively, please?
Due to the fact that this seems to affect a quite large number of users I mark it with "high" importance.
There are countries in which floppy is still a common device and there are still people having old archives in floppies using quite old hardware.
There are also other bug reports I'm investigating into, candidate as duplicate of this one.