this is happening to me on os x 10.7, LCCS 2.2 , firefox 8.0.1
sometimes when initiating screen sharing, and *especially* when requesting remote control, the connectnow plugin dialog will appear behind other windows so it is essentially hidden. this is especially a problem when you are requesting to control another user's screen - the permission dialog pops open behind other windows so they never see it.
this may not be an LCCS issue but i can't find anything to address this in ConnectNow forums. LCCS team, is this a known issue? anyone else had trouble with this?