Thanks for the reply.
I have checked the view tab and edges, faces and compass all have a black dot against them.
The 'object group 1' box on the right side shows my file.
I assume I check the log by clicking on it in the tabs below the 'file, view etc area?
When I do this the '3d view' and 'temperature curve' tabs along with everything along the bottom and right flash but nothing else changes? should I get a log page?
I have had problems with OpenGL drivers before, how can I check for them?
Bob.