The FCC has officially opened a couple of rule-making proceedings regarding network management, as a result of Comcast being called out for blocking traffic from torrent sites, namely BitTorrent. You may recall the debacle. A little experiment was done in order to find out if ISPs did in fact block traffic from p2p sites. Comcast was found out, and an avalanche of trouble then ensued, not only for Comcast but for several other ISPs as well.
The larger issue is of course net neutrality, and with this being an election year for a new president in the White House and a renewed interest in the regulation of various Internet protocol, services and related companies, it's been a somewhat personal mission for FCC Chairman Kevin Martin to get the investigation rolling. What the first of these proceedings will determine is whether or not Comcast's traffic management actually violates the FCC's policies.
You may recall that Vuze wants the FCC to rule that such "management prohibits broadband providers from blocking, degrading, or unreasonably discriminating against lawful Internet applications, content, or technologies" according to Ars Technica. The debate for Vuze revolves around the non-transparent and discriminatory manner in which Comcast appears to be targeting certain applications from being accessed by its customers.