As I posted in another thread, I just got a Dolphin Dynamic yesterday and it seems to clean really well. Today it had been running for about an hour and I noticed from the house that it was in the same area of the pool. I went outside and saw it going across the width of the pool. It would go out about 9 feet from the wall and then reverse and come back to the wall. When it touched the wall it was not climbing, it would stop for a second and then go out on the same path it came for about 9 feet. It kept repeating this. After about six reps of this I reached in and moved it about 30 degrees, but it straightened out and continued to do this. I then turned the power off, and after a little while turned it back on and now it is working fine - covering lots of area and climbing walls. Any clue why it got stupid for a while?