MATE tries to automount floppy drive every login even if empty. How to make it stop?

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http://askubuntu.com – My PC has a 3.5" floppy drive and yes, I do use it. (Retrocomputing hobby.) I use Ubuntu 12.10 with MATE. At every login, the floppy drive lights up and I get the following message box: The title translates to: It wasn't possible to mount Diskette Disk Fun fact: If I rmmod floppy and then modprobe floppy while logged in, the same message box appears again. Also, if I eventually access a floppy disk, the motor won't stop spinning. If I do a mdir of it, after it returns, the motor stops, and then starts again. I suspect there's some process in MATE doing this. My /etc/fstab has nothing rela (HowTos)