If that is the case then why is it taking so long to pinpoint the accounts bypassing the p2p shaping? surely this breaches your T&C's? Send them a warning or something... because as you make it sound in this thread. A minority is ruining the network for the majority...
Also if they are obscurificating the packets you would see a huge change of bandwidth to the "End Packet Type" Then you can do research onto what programs are able to do this and fix it... Or even shape that spcific account...
What i don't get is why you have T&C's to protect your network but they are not enforced strongly enough to actually do that....
If somebody is in breach then do something about it... then you can look at how to stop it in future!
If anyone is intentionally bypassing our AUP then it is a violation of terms. But I think we may need to be reasonable as well. They simply may not know that a new torrent service is using a different signature to be more sneaky. After all, many ISPs use the same information to shape their networks.