Please time out the "So and so event going on send IM for landmark" notifications. The way they are now they stay forever until you click ok. If they do currently time out, please cut the threshhold way back or have an option to set it.
Also to that point...either don't display, or have those messages time out, when in mouselook. As it stands, you're running around blasting things, and you get an event/system message popup, which you have to leave mouselook to clear. If you're playing a game this is a pain.