I should say first that we all share the frustration.
The answer to your second question is that we are using a third party plugin for squirrelmail to power the report spam button, and it doesn't move the mail to the trash. Colin has been working on improving the functionality although I'm not sure how far he got. I will check when he's back at work in the new year. We will need to rethink the process at any rate once
Postini is implemented fully so I'm not sure which will come first.
That is the point really. We have invested heavily in new technology to combat the spam issue, which is impacting all of us and until that comes into play I don't think we can do much to counter the problem. The need for the new solution has come about because of the inadequacies in the current Dspam implementation. Although we are still training Dspam, the reality is that it isn't very effective. Among other things, by the time the learning takes effect the spam attack has changed and it's too late. There has been deep discussion on the technicalities of this in our forums so I won't repeat it here.
Suffice it to say that Postini should make an immense difference to the amount of spam people are getting. The
trial is available now and has seen good results for most people, although I wouldn't recommend anyone with a critical dependence on email.
Ian