Hi all,
We're aware that there have been problems trying to post messages to the forum, particularly when replying to a topic. Don't worry, it's not just you. It seems to be a security filter on our server. We're attempting to get this fixed as soon as possible.
If it happens to you, try breaking your message into small pieces.
Sorry for the inconvenience - hopefully this will be resolved soon.
Matt
This is now fixed! Post away :)