its not a problem...it just is!!! its why no pro studio use fluro's, they'll have either incandescant or the most popular, downlights that run off their own 12v transformers....the only fluros studio use are in areas on seperate power/light circuits far removed from the studio work supply....you could try a line filter on the power going into your work area, it will reduce it considerably but not remove it entirely.
cheers