Ubuntu can't see usb drive

[Douglas Pollard]

Hi All,  In the process of updates, grades, and the installation of a 
new DVD burner. My Ubuntu 11.04 can't see my 2 gig usb drive im not sure 
when this happened. I guess there must be a permission problem but I 
don't know what to do about it.  I ran into this a couple years ago and 
got help here but I can't remember what I did about it.  Anybody got a 
good link handy for help?    I'll be Googleing for help.        Doug