It was the 1st time i have ever been asked to have hand luggage weighed ...
I have had this happen a few times, with various airlines, including Qantas. I actually wish they'd do it more often, with some people blatantly taking way too much carry-on.

In a slightly related rant - I can't stand the charging for checked baggage! It's no difference to me, if I have to check, I don't mind paying. Whatever. But what I can't stand is what it's done to the overhead lockers - they now get jammed full because of all the tightarses who take waaaay too much carry on, and then they take heaps longer to empty the plane.
[/rant]