Something is amiss with Skype. It seems that when you use the touch tone pad lately that it will keep the tone playing even after the button is released. Unfortunately, this is unbeknownst to the Skype user as the locally produced tone does in fact end. This has been tying up the bridge the past couple of nights. I've found that if after entering in 752 you place the call on hold then take it off hold and then press the # key that this causes the tone to stop. If you're using Skype to dial into the bridge, you might want to try this to avoid causing everyone else a headache.
In other Skype news, calls to the UK this weekend will be free so this should yield some interesting calls on the bridge!