I got this error message when testing the touch screen:
SEVERE: 3172 omapCursor.c:285 fbOmapCursorSetPosition: Cannot rewrite cursor image

This might be a valid error, but I don't understand why the cursor try to rewrite itself when its disabled (only touch screen connected)

So I think:
1) disable cusrsor updated when is not visible (no pointer device, or only touch screen connected)
2) see why the error happens (I don't have additional info to provide in order to reproduce this error, just play with the touch on some application)