Was this ever resolved? I am having the same issue - fairly new Samsung Galaxy S2 won't "connect" when charger is plugged in. I have to play with the plug and once it finally connects, i SLOWLY put it down to not disturb the connection. I also have a Samsung docking station, and the phone connects to the docking station and will operate in docking station mode, but will no longer charge.
I have Tmobile if it makes a difference.
I have Tmobile if it makes a difference.