Ever since installing 10.5.7 I have been experiencing problems with the mouse cursor. On my intel iMac's primary display (but not my external display)... the mouse cursor will disappear while moving the cursor, then reappear after the movement is over, so it looks like the cursor is flickering rapidly when it's in motion. This flickering problem will happen with a normal cursor only intermittently (usually when the cursor is over a scrollbar), but it always happens when the cursor changes to a crosshairs for screen capture (command-shift-4). As mentioned above, this only happens on the internal LCD, not my external monitor. Also, I seem to remember that you could make a stationary cursor disappear by pressing Escape (good for if you have to zoom into a small video box and don't want the cursor distracting people). Now it seems that only works when a text editing box is active. Anyone else having these problems?