Recently i had installed Adobe Photoshop CS4 on my system. I've found that the circle defining a brush size begins to disappear between size 150 and 200. The only way to do this is to reduce my pencil diameter to one pixel, which is obviously way harder to draw. Any one has any idea why i'm facing Adobe Photoshop CS4 Brush sizing issue? Have others encountered this and is there a solution (setting I've missed)? This happens with every type of brush and brush tool I've tried. Kindly help me out to resolve the above issue. Thanks.