My father just upgraded his laptop from Jaunty to Karmic and has run into an issue when he plugs in his USB flash drive.

When he tries to plug in any USB, he gets the error "Unable to mount USB, Not Authorized"

I am going there after work to check it out, just wondering if anyone has a solution to this.

Here is a screen shot of the error: http://imgur.com/hvGwY.jpg

Thanks in advance.