Copy protection of recorded broadcast tv program

I have XP media center 2005. I have been recording a series then burning it to DVD for later viewing. This past week the Click to DVD software on my SONY PC; for the first time, gave me a code that when translated said the program was copy protected. Never before in recording this same series (Stargate Atlantis) have I encountered this situation.
My questions: Is this something new; just instituted by some networks.
If so does someone know the particulars. And lastly which software will (is this the right word?) decode said copy protection.
BTW i already have AnyDVD,CloneCD and Clone DVD2.
Thanks for any assist/advice!