I touched on it in another post, but its still happening.
I have now lost 6 out of the last 7 times with KK to:
A7 (minor damage to my chip stack)
TT (busted me)
AA twice (busted me/crippled me)
AJ and JTh on the same hand; River came Ah. Short stack hit the Flush, big stack hit the pair and I got busted.
And one hand I got away from when flop hit AAx.
My one win all I got were the blinds.

I'm starting to get mad.

what do you raise pf? I open for 3.5bb-4bb. if someon is in the pot pf with a limp, ill jack it up to 5bb. if there are multiple limps, ill prolly jack it to 6bb. if someone has raised to 3-4bb then i will re raise to about 12-14bb. and if a dude raised to 3.5 and got some calls pf, ill jack it up to 20bb+.

This works for me, i dont get sucked out too much in cash. but if you are going all in pf, and these hands are busting you, its just bad luck. Running into AA when holding KK is like 1/23 i think about.

__________________
I get more ass than a toilet seat. All shapes/colors/sizes.

caution:
http://girlvideos.blogspot.com/

Depending on the situation I play it very similar to what you said. All of my hands were in MTT play. The times that I got busted/crippled were either:

a) vs. AA and the betting escalated fast PF (unless its a VERY tight player its almost impossible to put someone on this hand)
b) i was relatively short stacked and pushed.
c) a short stack pushed and I called

I don't feel I am playing this hand poorly, yet. I still think its just bad luck, but I'm paying close attention to this hand from now on.

I think it is a bit more than 1/23.

But the only way to stop people from sucking out on you is to make it cost too much for them PF. I would limp in with AK alot before I learned that lesson.