OK, will check this problem. The game is ok when you disable analog stick in menu ?
No it makes no difference.
This is not the only emulator that I have noticed with the same problem,
Dcastaway also does it and also in fba the analogue stick does not work at all.
It started happening after the 22/7/13 firmware update.
I have tested my analogue stick in the hwtest and also scummvm and there are no problems at all.
It seems to be only affecting apps that use both the dpad and analogue stick.
Also it seems to only happen during startup of a game, if I rotate the analogue stick a couple of times during play it seems to go back to normal control, and if I touch the analogue stick again by accident it starts spinning out of control again. (If that makes any sense!)