[Yours]

That is rather large I would have to say. That many forums would be a bit much for me; but back to the subject.

The only way I can think of is by increasing your max_allowed_packet yourself, and ask your webhost to do the same. The host you have is just setup to have much smaller MySQL packet sizes.

Now about a mod I am not possitive that there is an existing mod that can do what you are asking for.