[CentOS] how to restart the USB driver

Sat Jun 9 21:18:12 UTC 2007
Jerry Geis <geisj at pagestation.com>

How do I restart the USB driver on centos 5?

I am getting a dump in /var/log/messages and
I cannot mount the USB thumbdrive I plug in.
It does not auto mount nor can I mount it.

Thanks,

Jerry