Bad GPG Key

[Robert B. Hawkins]

Hey folks,

I was going to upgrade to Koffice 1.6.2 but my update
gave me the following error:

GPG error: http://ftp.gtlib.cc.gatech.edu edgy Release: The following 
signatures were invalid: BADSIG A506E6D4DD4D5088 Jonathan Riddell 
<jriddell at ubuntu.com>

I did try another mirror server as well, same thing.  Any ideas?
The Koffice packages are ready to upgrade, but I didn't want to 
with this staring me in the face.....

I am on edgy, btw.

TIA,
Rob
-- 
Robert B. Hawkins
rbh at neohawk.org