I bought a black wireless adapter with the two anthenas about four months ago it was working great. I moved two months ago and know the dashboard is very very slow, I'll go to the game marketplace and it will take forever to load.
When I start a game, most of the times it disconnects at the beginning. it also take forever for my friend list to show up when I turn on the system.
The thing is that when I'm playing a game the connection is good I can play online perfectly, it's just in the marketplace and friend list.
Anyone has had the same problems??