I noticed last evening, while I was on a leisure flight cruising at 6000 feet (and loving my SR20) that air was blowing in on my left leg, and found an opening along the bottom of the door that was about six inches long and about a half an inch wide. At the time, I thought I had not completely closed the door before takeoff.
On the return trip, I was very careful to make sure the door was properly closed. After leveling out, and gaining some airspeed, it happened again.
Anyone else have this happen, or have any suggestions?