I was investigating a problem when a sip account is unregistered (put Offline), presence events are still coming
even you are offline you still see contact statuses.
I saw that in ProtocolProviderServiceSipImpl in ShutdownThread (line 1448)
the following is commented - this.jainSipStack.stop();
Is this with some purpose ? Any Ideas ? Is there any problem if the stack is stopped
on unregistering the ProtocolProvider ?