2D problems with Matrox G400 (Anti-aliased Fonts and cursors)

I have the following two problems with my Matrox...

a) The new cursor with the whiteglass theme, sometimes is rendered with a
   dark red colour, especially when the cursor is over a textbox or the
   edjes of a button.
   Also because I am using my Matrox dualheaded, sometimes the cursor is
   drawn on the second head despite the fact that the mouse cursor is on
   the first head. This probably has nothing to do with the colour of the
   cursor (if the cursor is rendered dark red or white). So sometimes my
   second screen may get corrupted with many cursors drawn on it, and I
   have to place a window over them, in order to clear it.

b) Also sometimes the same happens and with anti-aliased fonts, especially
   when I am doing something which for example scrolls down very fast my
   terminal which uses anti-aliased fonts. For example if I run configure
   on my anti-aliased kosnole. Most of the times the fonts are drawn at
   the left side of my second screen, which has a smaller resolution than
   my first head (1024x768 instead of 1280x1024). Also the fonts which
   are drawn in the second head are whole lines from the application
   which scrolls very fast on the first head. Most of the times this
   happens with  some mouse cursors around him, as I described in problem
   a).

I am using mga_hal_drv.o, but probably this is not the problem, because I
tried once an Xserver without loading mga_hal_drv.o and the cursor again
changed colours. Without mga_hal_drv.o I can't have dualhead mode, so
I don't know for the other problems.

When I used Option "NoAccel" "1", everything works fine, but the server is
too slow....

As I can understand this is probably a Xrender problem for the mga driver.
I would like to search a bit, but I don't know how Xrender is used by the
mga driver.

Regards

	Panagiotis Papadakos