The villain made some standard 3x raises quite often before (~4-5 for the first 20 min but never got too crazy or anything), and on the first hand I shoved KK after his 3x raise hoping he would stack of on any AJ+ but he folded. I thought that might loosen his 4bet range against me. Could you fold this with this much invested and the given info? Outcome should be quite obvious, so I won't post it...

pokerstars Game #15336673745: Tournament #77010046, $50+$5 Hold'em No Limit - Level II (15/30) - 2008/02/16 - 21:49:24 (ET)
Table '77010046 110' 9-max Seat #5 is the button
Seat 1: fltombo (3040 in chips)
Seat 2: Zugzw4ng (2955 in chips)
Seat 3: roary2808 (3015 in chips)
Seat 4: usourcek (2830 in chips)
Seat 5: vilaha08 (1440 in chips)
Seat 6: mudhen4 (2940 in chips) is sitting out
Seat 7: KINGoftheNET (5010 in chips)
Seat 8: SnowwwMan (3310 in chips)
Seat 9: casino_donk (2450 in chips)
mudhen4: posts small blind 15
KINGoftheNET: posts big blind 30
*** HOLE CARDS ***
Dealt to Zugzw4ng [Ks Ad]
SnowwwMan: folds
casino_donk: raises 90 to 120
fltombo: folds
Zugzw4ng: raises 420 to 540
roary2808: folds
usourcek: folds
vilaha08: folds
mudhen4: folds
KINGoftheNET: folds
casino_donk: raises 1910 to 2450 and is all-in