Don't know if anything can be done about this, but . . if you attempt to start PChat or zone to another zone, but XMPP doesn't 'catch' - I mean XMPP doesn't make the XMPP connection - the whole PC locks up with a black screen and moveable mouse cursor. (If thecaperadio.com player is running, the music continues uninterrupted.)
Ctl-Alt-Del, Windows-D, Alt-Tab, Windows-Tab - none of those do anything until XMPP times out (a minute or more) and gives a 'No Map Server Connection, Try Again' (or words to that effect) message. If I do click the 'Log In' button again, it always 'makes' the second time.
This is not very common, maybe once a day for a while, then no occurrences for several days. If we could reduce the TIMEOUT for XMPP, I don't mind clicking the 'Log In' button a second time near as much as having my whole PC lock up while waiting.