Since I started this thread I should really reply. I do aplogize for the lack of a reply to all the suggestions and views that people have made about ways that users of MT or TCH can use to block these comment spammers. Obviously I was occupied with all the MT comment spamming that was happening during the past 48 hours. Right now I can see that it's going pretty strong, but the new filters that we've put in place are working and we'll continue to fine tune those filters as new spammers come known to us.
HCSuperStores, I do have to apologize to you and any other user who was affected by the initial filters that I set. I did eventually realize that the filters were too broad. As you've mentioned, this has now been corrected and things should look much better. But to all users that do see a 406 error and you know you haven't done anything wrong... please do send a ticket into us so that we can investigate it and again fine tune the filters.
The suggestion of a TCH script that changes the name of mt-comments.cgi and the other methods of combating the comment spamming is something that we simply can't do. The renaming of the files will get very confusing, if our script renamed all the mt-comments.cgi script, then it renames it again the next, it's possible that some users decide that they change it themselves for some reason. There's also many users that have already changed their script name from the standard mt-comments.cgi filename.
We also don't feel comfortable being "Big Brother" and changing files in users' accounts. Of course we will do the "Big Brother" thing in terms of securing the server and making sure everything is running and secure at all times. We want customers to be able to purchase hosting at TCH and use it normally as they wish (following our AUP of course), without too many restrictions.
We look after our customers and I can assure you that we are working on the MT comment spamming that is affecting other users that are on the same servers as MT users. We won't let our service degrade, that I can guarantee.