[ubuntu] Mounting USB problem?

view story

http://ubuntuforums.org – Hi, I'm trying to mount my usb and its giving me a weird message of - mount: /dev/sdb already mounted or /mnt/usb busy When I cd into /mnt/usb, I see that its empty and doesn't contain the contents of my flash drive! Its a Sandisk Cruzer U3 (if that info helps at all), and I know the machine recognizes it because when I plug it in, a bunch of text comes up that displays things like "write through" and stuff that I don't understand. Sorry for being a noob, but we all gotta start somewhere (Hardware)