[CentOS] USB drive detected, but nothing gets mounted.

Tue Aug 19 17:44:03 UTC 2008
MHR <mhullrich at gmail.com>

I have a brand new, unaltered (as yet) 4Gb USB flash drive from Micro
Center that does not get automounted when I plug it into my 5.2
desktop (home or work).

It shows up in lsusb, and I can mount it manually, so why would it not
mount automatically?  Note that when I plug in other flash drives on
the same machine before and after, they all get automounted as usual.