Bayes DB does not grow anymore

[GRP Productions]

Hello,
for some days now my bayesian DB does not seem to grow. Its size remains
stable. It is read with no problems by SA 3.0.2, but nothing new is written. 
I send an email to me, it is classified as BAYES_50. I sa-learn it as spam, 
send it again, and it is still BAYES_50 (I expected to see it as BAYES_99).

I use SpamAssassin 3.0.2. No configuration change has been done recently. It 
used to work fine.
I've tried --sync, --force-expire, but no luck.
Any help would be appreciated
Thanks
Greg

_________________________________________________________________
Express yourself instantly with MSN Messenger! Download today it's FREE! 
http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/