10.5.6 Update breaks USB Keyboard causes iPod Battery Drain when sleeping.

I just recently installed 10.5.6 via automatic updates. I normally connect my iPod touch to my iMac via the keyboard Left USB port. I put my computer asleep at night. When I wake up my iMac in the morning my iPod is totally drained of its power over night. When I placed the iMac asleep in the evening the iPod battery was full. It seems the update broke the USB ports on the keyboard. To test this theory I tested keyboard on all three ports on the iMac by moving my keyboard connection. The iPod touch drained connected to the keyboard on all three ports. If I place my iPod on the USB port by itself it does not happen. It only happens when it is connected to the keyboard.
So far I have downloaded the full install of 10.5.6 and installed it. I also did the little voodoo of fixing permissions but still the same results. If I use the USB port on my keyboard my iPod will drain of all of its power in 6 to 8 hours when I place my computer a sleep. If I connect my iPod directly to USB port and put my computer asleep the iPod does not loose power and will be charged in the morning.
Not only does the keyboard not charge the iPod when it sleeps it drains the power from the iPod.
This did not happen before my update to 10.5.6.
Does anyone have any ideas? Is this happening to anyone else?
Thank you for your help.

I opened a service call with Apple on this keyboard problem. I was shipped a new keyboard, reverted my computer to 10.5.5, went to the apple store to work with a Genius and worked with online support. Finally after weeks of going back and forth I received and answer from Apple Engineers. It seems the engineers “verified that the behavior for power handling has been changed” in 10.5.6. “resulting in the issue you've been reporting”. They also now “verified that the issue your reporting is correct behavior under this improved handling system”. They suggest to plug devices directly into the USB port when my iPod Touch is directly attached to my computer. I think I will just have to get a USB hub. It is a shame Apple had to waist money sending me a new keyboard. It is also a shame I had to revert my iMac to a 10.5.5 before the engineers took the time to look at the problem I was having. If the send level support engineers took the time to look into the problem the call could have been solved in 24 hours.

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