Snes9x GX v4.0.7, released June 30, includes this fix.by rewt - Homebrew General
Basically the problem is that some nunchuks don't seem to have min and max calibration values, so for affected nunchuks, the patch initializes them with usable values when you connect them (about 80%-90% of the physical range, depending on the nunchuk), and then extends them to the physical extremes as you move the joystick around. The lack of min/max effects the right=left and up=down prby rewt - Homebrew General
My patch to fix this was accepted into libogc, so as soon as the games/apps get compiled with the latest version of libogc, the nunchuk joystick should function fine. I went through this thread, and every game I saw uses libogc, so this patch will fix all of them. Click here to download Snes9x GX (SVN version, 2009-06-11) compiled with latest libogc (SVN version, 2009-06-11). (unzip, thenby rewt - Homebrew General