All of the art quilters were able to make it here yesterday and we had a lot of fun. After they left I decided I would sort through my black and white prints and organize them. The 8' fluorescent bulbs above it started flickering right after I started so I had to quit. they were fine all day while my company was here. My fixtures are 11-28 years old down there and the ballasts are dying in some of them. With the daylight bulbs being $11 each, I hate to just put in new bulbs and have them burn out right away if the ballast is the problem.