Engine Oil Leaking problems of the 2004 Toyota Camry

My 2004 Toyota Camry engine died 10/ 22/07 w/59,615 miles on it. 13464 miles @ purchase-I was told that it was a program car w/extended warranty=6 yrs/100k miles. Found the window sticker when I traded it in. No problems with the car prior to the incident. Coming home from a trip, power steering lost some functionality; a service light came on; my husband put power steering fluid in; we headed to the nearest Toyota dealer. En route we lost all power steering & ability to accelerate, engine began to smoke; car cut off. The dealership took 5-6 weeks to replace the engine. Doubt old parts are available. On a couple of occasions incorrect parts were ordered/received. Picked the vehicle up~12/1/07; 59620 miles on it. While awaiting repairs dealerships/corporate offices could only advise the car may be under basic warranty. Took it to the dealership where purchased the next business day. Smelled smoke and wanted assurance a new engine was put in as promised & that there were no other problems. They made $900+ worth of added repairs-rear main seal oil leak; axle boot leak. It had 59949 miles on it. At that point I didn't want it back. I wanted Toyota to assume responsibility for selling a lemon. My main concern: is there a serious safety hazard with 2004 Toyota Camry models as seen in previous years (engine oil sludge)? secondly, did something else cause this incident? the dealership where I purchased this Camry should have responded to my dissatisfaction; they should have acknowledged/offered some incentives for selling me a lemon. Their only concern, make another sale. Requested a call from/audience with the owner. Hasn't happened. I needed a car and believed this was aberration with respect to Camry models' performance. Not sure that they'll keep me as a customer. I thank god we had no accident, no known injuries. Please let me know if there's litigation this make/model; I'd like to join the litigants. I can give you my VIN number at your request. Thanks.