evolution /spamassassin marks everything as spam

[Matt Price]

Hi everyone,

after months of frustration with my increasing spam pile, I decided to
finally try to enable spam checking in evolution.  Following various web
advice, I installed spamassassin, trained it up using Ham ans Spam
messages (a couple of hundred each), and then 
(a) enabled the spamchecking module in evolution via Mail Preferences >
Junk > Check Incoming Mail for junk
(b) for good measure, added the following manual filter:
if Pipe to Program spamassassin -e does not return 0
then
set status Junk
Stop Processing

but (b) was way too slow and I couldn't figure out a way to get the
filter to work with spamc instead.  

SO now I just have the default spam filter enabled, and all my mail is
being tagged as spam.  On the other hand, if I isolate a single message
and run spamc on the ocmmand line, e.g:

cat ~/.evolution/mail/local/test | spamc -R

I get very good results (non-spam has very low scores, spam has very
high scores).  Has anyone else dealt with this issue?  Can you suggest a
solution?

Thanks,

Matt