You are tight in your internal rotators & probably weak in your external rotators - thus the beginning of an upper crossed syndrome & the forward head posture that many lifters develop due to a poorly designed training program where you are dominant in anterior movements and defecient in posterior & external rotation movements. If you do not seriously redesign your program you will continue to feel less comfortable squatting and eventually have neck & shoulder pain or problems and become one of those head forward, hunched over morons who only do chest and bi's seriously with way, way too many cunches and look like neanderthal man. Ask one of these idiots to do an unassisted pullup or chin up or a barbell row in strict form with no cheating, jerking or swinging of the bar with the same weight they bench - they can't!! and its due to lack of a properly desgined program.
you need to seriously reduce all anterior movements (benching, delt work, crunches & bicep curls) and increase all your posterior movements especially retraction & external rotation. You need to have your posture assessed and develop a corrective stretching program for your tight muscles ONLY (If you stretch everything you will create more problems - stretching a weak or overstrecthed muscle will only make it weaker!)
I suggest finding a corrective exercise specialist or good PT to help you; or at least a book on proper program design and DO NOT follow any of the garbage routines in bodybuilding mags, they will definately make your problem worse!!
S
P.S. Also not squatting is NOT the answer! (Leg pressess & extensions can NEVER equal the squat!)