Hotspot for Nexus no longer compatible w/ Xbox Live

[seattlemarket53]

I had been using the hotspot on my galaxy nexus since launch date and in the last two weeks I have not been able to use Xbox Live the way it used to.  I had no problem playing multiplayer games with considerably no lag and watch Netflix in HD quality.  Now when I login to Xbox Live it takes a really long time, and using any content such as Netflix or Video Apps requires a lot of  buffering and are shown in a really low resolution.  On top of that I lose connection to almost any multiplayer game I join such as Halo Reach or FIFA 12 (I have tried other games as well).  Any help or suggestions?? Or has anyone heard of Verizon possibly shutting down the ports necessary to play Xbox Live???