Harmonic Technology Cyberlight cables

Has anyone experienced humm from these cables?

I just recieved a pair to try from the Cable Company and it seems there is a humm coming from one of the interconnects. This humm is pretty signifacant but, out of only one channel.
I have tried exchanging the cables and the hum travels with one of the cables.
So, I guess that cable is defective.

Before I get replacments from the Cable Company,has anyone had theirs play ok intially and develop a humm later ?

They are very expensive, and only come with a one year warranty. If this is a problem with these cables then I wont bother to try another set.

Mystery humm cleared. But still strange.

I am using a APL 3910 direct to my Krell Amp.

I had a Composite Video (RCA) connected to the APL and then to a small TV so I could use the TV when playing DVD-A's while navigating thru the menus.
Once I disconnected that RCA Video connection the humm went away.
I still think its strange though since these cables claim to break the grounds that this video connection produced the humm and it was only in one cable.

I totally agree a one year warranty for such an Investment is way too short!
The Power Pack (+$399 Option)contains a special battery and charger for running the cables straight from the battery.
Now the battery life must be limited and problably hard for the consumer to change. The charger could malfunction.

These cables have been out for about a year now. I would like to here from people who have had these cables a long time.
How are they performing?
I know thre has been compatibility problems, but to those that did not have that problem , have you had any other problems?
Will they last for the long term ?

Beowulf,
I tried the optional battery supply and it was an improvement over the wall wart.

I have had a pair of Cyberlights P2A for about 5-6 months.
I have had no problems with them.
Huge, large, deep, soundstage with excellent bass. mid and treble. Better than any cables I have tried.
I believe I read that early on in the production of these cables they had problems.
Once you try them you can never do without them, they make that much difference !