Allot Communications states:
Previously, companies have been able to detect and manage applications based on the BitTorrent peer-to-peer (P2P) file transfer protocol. However, detecting encrypted BitTorrent
has been nearly impossible.
They continue:
Today, Allot is announcing that its NetEnforcer is the first broadband traffic management device to identify and help manage applications based on the encrypted BitTorrent P2P file transfer protocol.
Bittorrent traffic is consuming 40-60% of ISP’s traffic, and more and more ISP’s started to block, and or throttle Bittorrent traffic for this reason.
Earlier this year, the most popular bittorrent clients implemented RC4 encryption, to counter this bandwith throtteling. The bittorrent encryption seems to work pretty well, and the topic led to a heated discussion on this site.
NetEnforcer is a new weapon for the ISP’s in the battle for bandwidth. The developers of Azureus, Bitcomet and µTorrent have some work to do if NetEnforcer can live up to its expectations.
Source: torrentfreak
WTF's up with these ISP's the advertise that you download music , videos ect..using p2p faster then a dial up service then after you get the service they throttle your bandwidth 
.If I was on a throttling ISP I would be canceling my high speed service asap and would be looking for another ISP.
