Our office scored a direct hit from lightning several years ago. Everything that was plugged into an electrical outlet through a surge protector was fried. (Computers, Copier, Alarm System, etc.) The one electronic device that DID survive was the fax machine--which was plugged directly into the wall.
I think that if you take a direct hit, it doesn't really matter. It might save you some hassle with insurance folks to get it replaced if you can say you had a surge protector connected.
And BTW, we had a laptop get fried too and the power cord was not plugged in. Lightning can and will travel through your Ethernet cables too!!
As long as you're not using HomePlug networking then I'd recommend plugging it in to a surge protector. I have all of my equipment plugged into APC surge protectors/UPSs and I haven't had any issues at all. Oh and I disagree with cutting off the power to all of your equipment entirely each evening, it really doesn't save you that much in electricity and it causes more problems than the very few pennies than you save.
Surge Protectors, Are designed to protect from serges in an electric lines. Example, if you live in an major city the chances are you do not have 110, in NYC the average is around 100 volts the protectors are designed to protect against sudden change in the line voltage, like when you have a power failure the voltage and amperage may spike above 120 which would damage some equipment. With the receiver I have found that the voltage can get into the system from any line hooked to the receiver. This includes the power cord, Ethernet, home plug, phone line ETC. and I have had receivers damaged from all the sources.
Do not have the line going to the dish run through the surge protector, most are not designed to handle voltage there is voltage going to the dish, it will fail.
Being plugged into some surge protectors do regulate the power and can cause remote issues, I personally ran into this just this week with a 622 install plugged into the surge protector it took 3 to 5 seconds for any remote to register any push of a button, plugged directly into the wall and the remote was immediate, as I was told this is now in the FSS100 class
You are saying it effect the speed of the REMOTE CONTROL working?
While the tag on the cord "recommends" a surge protector, I have personally seen it lead to rebooting issues and power failures. I PERSONALLY recommend it be plugged straight into the wall. As a troubleshooting step, it is suggested to bypass the surge protector if possible, as that could correct issues as well.
I have had my 722 plugged directly into the wall since installation, no flaws, no glitches, and not a HINT of anything that anyone has suggested as a common problem here or on any other forum.
Here is my thoughts on surge protectors. Everyone has a different idea of a good one. Some people say they bought an expensive one (using $6 range as a cheap one). Some people base it on name, like Panamax or Monster. Honestly, I have not seen a great device less then $299. Even if I could afford the $1500 you can find power conditioners for (and yes, they go MUCH higher), I would still not run my receiver through it.
I use a Monster MDP 900 surge protector with my 722K. The protector has a dedicated HomePlug outlet for the 722. I use a Netgear ethernet bridge which is connected to my router. The set-up works fine.