I think, we have a nearly similar problem as Nick with the edgeport/8 (Aug 31- Edgeport/8 randomly disappear). When I try to open all edgeports for the second time (to let the user choose a free one), I get a 'semaphore timed out' error during opening. I tried the newest driver (shorter closing time..), but the problem was the same. The first port the user has chosen, continues to work properly.
Have you any ideas how I can solve the problem?