I have just downloaded the Jabber client for Windows 7 (v4.6). I have two built-in iSight webcams, but Jabber is only able to use one of them. I can see both webcams in the list of video devices (I can also see a third one -not iSight- that is also attached) but it does not matter which iSight camera I select, it always displays the video from the same iSight. No problem with the third non-iSight webcam.
Any idea about how to be able to use both cameras?