Aiming crosshair missing

I found out today when i logged in that i dont have that small white aiming box in my mouse look anymore. It makes quite hard to aim weapon. I must have turned it off accidentally but from where i can get it back or is this just some technical server related issue?

Now i have temporary fix. I draw aiming dot with texture market to my CRT-screen

I don't have SL up right now so I forget exactly where it is but enable Debug with Ctrl-Alt-D (Windows) or Ctrl-Opt-D (Mac) and go to the new Client menu next to Help. I believe under the Character option there are about a dozen show/hide options for stuff like show look, show wind. Look for the option for show crosshairs and make sure it's checked.