Pete go to configuration manager and see if the project is set to debug, it happens to me one time where I changed from release to debug so the solution was showing that I was in debug mode but for a given project that didn't happen, in the configuration manager that only project was showing as release, perhaps that's ur prb.

>Hi Alexandre, I tried that along with a host of other tips I collected on the web - still no joy, if I create a new project it debugs fine, it seems to be one particular solution with several projects that's the problem, thanks