I have a SD DVR and 2 SD recievers attached to a 2x4 multiswitch. About 2 weeks ago I started noticing a 1-2 second picture freezes. It happens on all 3 recievers about 1-2 times per hour. I kow that sunspot activity is highest this time of year. I am wondering if what I am seeing is due to sunspots, my multiswitch going bad, or my duel LNB going bad? Your thoughts???