What to do

PokerStars Game #25210313355: Tournament #142669292, $1.00+$0.10 Hold'em No Limit - Level IX (300/600) - 2009/02/21 21:31:38 ET
Table '142669292 3' 9-max Seat #6 is the button
Seat 2: Cellular123 (9628 in chips)
Seat 3: trapsterwife (6125 in chips)
Seat 4: Alele (3000 in chips)
Seat 5: will$ter (4250 in chips)
Seat 6: warman30 (3835 in chips)
Seat 7: Ruaidhrí12 (3885 in chips)
Seat 8: chas2051 (6360 in chips)
Cellular123: posts the ante 50
trapsterwife: posts the ante 50
Alele: posts the ante 50
will$ter: posts the ante 50
warman30: posts the ante 50
Ruaidhrí12: posts the ante 50
chas2051: posts the ante 50
Ruaidhrí12: posts small blind 300
chas2051: posts big blind 600
*** HOLE CARDS ***
Dealt to Ruaidhrí12 [Jd Kc]
Cellular123: raises 1200 to 1800
trapsterwife: folds
Alele: folds
will$ter: folds
warman30: folds
Ruaidhrí12: ???

Fold. Since your stack is so short that you have no chance of making the UTG raiser fold, whom you have to respect (unless your read dictates otherwise), you cant shove, and calling half your stack with KJ off suit is absolutely terrible.

Why even wonder? This is an obvious case where you should fold and play the next hand. KJ off suit is an extremely weak hand. Pocket 2's have you beat currently. I can't see a reason to call almost 1/2 of your stack to try to see a flop with that hand. The raiser won't fold if you push and I will almost guarantee you are behind.

Once again poke, stack size stack size stack size.
This would be OVER half your remaining stack just to see a flop with one of the most overplayed hands in hold em. Lets take a moment to see what KJ is absolutely dominated by
AA,KK,QQ,JJ,AK,AQ,AJ,KQ.
Now how about the hands you are BEHIND. Oh god this could go along way.
22,33,44,55,66,77,88,99,TT
so there are 17 hand which you are behind and I would almost GURANTEE that your aopponent has one of those hands. Its not even a question. So quite simply this is a fold all day, everyday.