http://bugs.winehq.org/show_bug.cgi?id=17234
--- Comment #7 from Jörg Höhle hoehle@users.sourceforge.net 2009-06-17 16:00:35 --- Today, with wine-1.1.23 on the nVidia Mac mini, investigating bug #18615 I was surprised for some minutes. In Motocross Madness 2 Demo, there was absolutely no mouse lag when hovering over the buttons. However, there was a second, old-style mouse b&w pointer at the center of the screen -- for some time only! The regular mouse pointer (grey, with shadow) was the one that moved around. The old-style one was fixed at the center of the screen *except* when the regular mouse moved over or clicked a button, in which case it jumped by a few pixel, before returning slowly to the center. So there's a connection with those mouse-warping bugs. Later, or starting the demo anew, this extra mouse pointer was never seen again. Go figure.
Using Mac OS X 10.5.7, XQuartz 2.3.3.1 and compiled wine myself without Fink or Macports.
As mentioned in bug #18956, for 1.1.23, you need backbuffer instead of fbo with MCM2 on the Mac: HKCU\Software\Wine\Direct3D "OffscreenRenderingMode"="backbuffer"