Using the latest stable jitsi build (2.2.4603.9615) @ win7 64 bit,
standalone PC, admin rights.
Point (2) is fairly obvious, it was reported already, once the webcam is
used (even if I just open the tab in the options) I have to reboot
before the cam turns off.
Point (1) is also already reported in https://trac.jitsi.org/ticket/719,
but marked as closed/worksforme. It's a sneaky issue because it usually
doesn't happen, but it's definitely still there.
* If you go to options -> events and remove both the icon in the
messagebox column as well as the checkmark for the "Incoming message"
event, everything is fine (no notifications, although I have general ->
Use task bar / dock alerts enabled).
* If you restart jitsi, everything is still fine.
But since installing jitsi today I have had 4 times already that
suddenly notifications start appearing again, and when I look in the
settings the checkmark is set again, as well as the icon in the message
I'll keep an eye on whether I can spot any triggering situations, but a
code inspection as to what can touch that setting is probably easier
than black box guessing.