For all of you who bought a power conditioner thinking you were protected you most likely aren't if your conditioner is not UL 1449 rated for endurance testing and if the company doesn't post it's UL 1449 numbers on it's website or product. Also, a "A,1,1" rating is best. Look for UL 1449 adjunct testing ratings also known as endurance testing, if they don't show the numbers then it's not capable of protecting your system. Make sure it's UL certified. Do NOT buy power conditioners/Surge protectors that use ground for surges. The link below explains which types of conditioners and brands to buy and which ones are useless.
This explains it all:
SurgeX is one of the few that is UL certified and posts all it's UL 1449 numbers/results and has a A 1 1 rating which is the highest rating. They also are the conditioner of choice for the new Dallas Cowboys stadium to protect it's electronics.