sorry to be slow saying thanks for the hekp with the spirograph problem - your fix worked a treat, and so far no noticeable slowing down in SU7.

hi - I'm a new user, with a macbook and a GMA950 graphics card, and experiencing both problems described. That's the 'hang bug' ( I assume that means the spirograph like trails that tools leave on the drawing pane after I've used the programme for about 15 minutes. And the disappearing edges - not quite sure what 'xray' view is, but I find I can't work in top view without edges disappearing and surfaces melding into one. Very frustrating.

I'm encountering lots of problems with using sketch up with my mac book (2.1).

When I create new surfaces or shapes they often obscure previous shapes/surfaces, even if they are adjacent not overlapping. This happens particularly in 2D view.

Most frustrating is the way the cursor behaves after about 20 mins of use - if using any tool, e.g. pencil, protractor, it begins replicate itself all over the drawing plane, a bit like old fashioned spirograph if anybody's old enough to remember that! It makes drawing hell. Some of my fellow students have suggested it might be the graphics card (which is GMA950) - has anybody else experienced this, and is there a solution?

I'm using both SU6 and SU7 - the problems seem the same in both.