Has anyone had any problems with their air conditioner? I bought my car Dec. 2007 and in April 2008 (4,100 miles) the two driver's side vents were not blowing cold air. The passenger side vents were blowing cold air. If you put one hand on each side you could definately feel the difference. I took the car to the dealer and they said that the tech performed a test and found no leaks, they only found that it was low on freon. So they added freon. Now Aug. 2008 (6,900 miles) it seems like the again the problem is starting to happen. Not every time I use the air conditioner but on occasion I can tell the driver's side vents are not blowing cold air, just blowing air. Anybody have any suggestion or has had the same problem?