spamassassin year 2010 bug

[John McMonagle]

On Saturday 02 January 2010 04:59:57 am Richard Bos wrote:
> Is this of any relevance to kolab's spamassassin:
> "  The Apache SpamAssassin spam filter has been shipping with a rule which
> defined any year past 2009 as "grossly in the future" and adding 3.2 to the
> email's spam score."
>
> http://www.h-online.com/open/news/item/SpamAssassin-s-new-year-hangover-894
>279.html http://it.slashdot.org/article.pl?sid=10/01/02/0027207

Yes it does affect kolab :(
I edited the rule on our server.
I did this change 
http://svn.apache.org/viewvc/spamassassin/trunk/rulesrc/sandbox/emailed/00_FVGT_File001.cf?r1=794319&r2=796216&diff_format=h

Noticed mention of using sa-update to update rules.
if I run sa-update get the following:
error: GPG validation failed!
The update downloaded successfully, but the GPG signature verification
failed.
channel: GPG validation failed, channel failed

Does anyone know how to set it up in kolab?

John