Ubuntu Geek posted a guide about mounting USB drivers in Ubuntu 10.10

Auto mounting Mounting By default, storage devices that are plugged into the system mount automatically in the /media directory, open a file browser window for each volume and place an icon on your desktop. If you plug in a usb hard disk with many partitions, all of the partitions will automatically mount

  How to Mount USB Drivers in Ubuntu 10.10 (Maverick)