Yes, it's too bad people do these kinds of things.

The activity on our system would not affect any other part of your computer. It would only affect you using our website or forum.

Basically, our system is so busy handling/scanning/rejecting spam email at times, that it has to make the forum wait at time.

Fortunately, there is a way to put a big limit on the incoming spam and I am going to implement it over the next week or so. This should cause things to work better.