I've upgraded two machines so far today and I'm seeing AWL hits that *reduce* the score of obvious spam.
This in and of itself is not a problem, unless it's causing false negatives.
It's impossible for the AWL to always give positive scores to spam, unless the scores of spam are constantly decreasing, in which case you are going to have FN problems soon.
In fact, if the AWL is giving negative scores to spam, this is a *good* sign, as it implies that the spam got a higher score than previous spam from the same source.
Please be sure to read the wiki on this subject:
http://wiki.apache.org/spamassassin/AwlWrongWay
Once you understand how the AWL works, and what it does, you can make better judgements on it's behavior.
