I have a new '05 STi (3K miles on it now), and recently (within the past 2-3 weeks) started experimenting with the DCCD Controls. Normally, I leave it set on Auto, but this morning I switched it over to manual, and had it set in the Lock position. As I was backing out of the parking spot I was in, the car was moving fine, until I was just about completely out of the spot. Then, it started to feel like someone pulled the hand brake (which didn't happen), and like gears slipping from directly under the car. I stopped the car, and put it in first, and started to pull forward, with the same result. So, I stopped the car, took it out of gear, and flipped the DCCD switch back to Auto. The car handled fine again. Later, once I reached my work's parking lot, I stopped the car again, and switched the DCCD back to manual, in the Lock position again. I pulled around the lot (no more than 10 mph), and it felt okay. I stopped the car, and started to go, and it felt like gears slipping from directly under the car again. So, I stopped, and switched back to Auto, and the car felt fine.
Has anyone experienced anything similar to this? I just wanted to check if it was a known issue, before I scheduled an appointment with the dealer.