[Chameleon] Grid layer problem

[Inizan, Sebastien (CDS-VPI)]

Dear chamelon people,

I have gone through a very strange problem: When I decide to display the
grid 

LAYER
	  NAME "Grid"
	  DUMP FALSE
	  TRANSPARENCY 100
	  
	  TYPE LINE
	  
	  STATUS OFF
	  CLASS
		COLOR 150 205 118
		  LABEL
			TYPE BITMAP
			SIZE MEDIUM
			COLOR 255 128 89
		  END
	  END
	 
	  GRID
		  MINSUBDIVIDE 0
		  MAXSUBDIVIDE 10
		  MININTERVAL 0
		  MAXINTERVAL 10
		  LABELFORMAT ""
	 END
END

The lines are not always drawn well, especially when zooming out in an
orthographic projection.

Anyone has any idea why this problem occurs ?

Seb.