The UI is also freezing when FF is first connected to network that uses PAC proxy, but then you change the network to one without PAC proxy. Then you have to wait very long time before FF finds there is no proxy. The cause of this is probably same.
The UI is also freezing when FF is first connected to network that uses PAC proxy, but then you change the network to one without PAC proxy. Then you have to wait very long time before FF finds there is no proxy.
The cause of this is probably same.