Hi, I'm a Windows$-spoiled n00b, please help me!

When I try to access the /mnt directory from Konqueror or another program (like e.g. K3b), strange things happen. Konqueror does nothing and "stalled" is displayed in its status bar, other programs mostly freeze and I have to kill them. When I change to the root terminal with Strg+Alt+F1 after such a thing happens it shows

end_request: I/O error, dev 02:00 (floppy), sector 1
end_request: I/O error, dev 02:00 (floppy), sector 2
end_request: I/O error, dev 02:00 (floppy), sector 3
end_request: I/O error, dev 02:00 (floppy), sector 4
etc...

Do you have any idea how I can prevent this error? Btw, I'm running Knoppix 3.4 from CD and I have no floppy drive.

Thanks!
kungfista