When I launch the emulator I face many problems (Errors):-
HttpConnectionApp]emulator-5554 disconnected!
Cancelling \'net.paxcel.http.HttpConnectionApp activ
AFAIK, this happens when an emulator is started, but the Android Debug Bridge couldn't establish connection to it.
If you have just started the emulator with your application, watch if you get Waiting for HOME to launch... or something similar in your Console.
If you don't get that message, but the emulator has been started, chances are, you'll get into the ERROR: the user data image is used by another emulator situation again.