Thanks for reaching out to us in the land of the forums. We do understand why you are are asking about the effect of the Electronic Fluorescent Ballasts.
They actually work like a conductor, and we have seen in the past that they sometimes can affect the actual SlingLink's. Since the SlingLink's are dependant on the actual current in the house, we have found that certain lights can actually affect the SlingLink. It does not happen often, but we have seen it from time to time. Simply removing the light from the area of the SlingLink's will usually fix the issue.
Hope this helps,
The Slingbox Moderation Team.