Description of problem:
Each morning, I get a cron email stating that tht GPG verification of sa-update
failed because it was signed with the wrong key.  

Even after following the instructions provided in the email, the error continues
and the updates are not verified so they are not installed.

Version-Release number of selected component (if applicable):
spamassassin-3.1.8-2.fc6

How reproducible:
With every cron run

Steps to Reproduce:
1. Install spamassassin-3.1.8-2.fc6
2. Invoke the /etc/cron.d/sa-update script
  
Actual results:
An email is sent to <root> with the following content:
/etc/cron.daily/sa-update:

error: GPG validation failed!
The update downloaded successfully, but it was not signed with a trusted GPG
key.  Instead, it was signed with the following keys:

    24F434CE 

Perhaps you need to import the channel's GPG key?  For example:

    wget http://spamassassin.apache.org/updates/GPG.KEY
    sa-update --import GPG.KEY

channel: GPG validation failed, channel failed

Expected results:
I expect that after following the instructions and installing the GPG key, that
the next morning's updates would be processed without this same error.

Additional info:
I don't think it makes any difference here, but i do not run the spamassassin
daemon because i run amavisd-new which calls spamassassin directly.