USB port power management issue on apple aluminium wired keyboard after upgrade to 10.8.5

Hi there,
Since I upgraded my imac (late 2012) from 10.8.4 to 10.8.5 today, i can't plug any usb flash drive, or my iPhone, to the USB port of the wired keyboard anymore; I have a power management message asking to plug the usb device to the imac directly!!
It was working perfectly just before the upgrade, is it a bug, any idea?

FYI...
I tried reporting the bug but so far have had no luck being able to do so.
I went to the developer center as Eric suggested and signed in with my Apple ID.
Once there I clicked on "Bug Reporting".
That took me to a Bug Reporting page with the heading "Submitting Bugs and Feedback".
On the side of that page is a little box that says "Apple Bug Reporter: Sign in with the Apple ID you used to register as an Apple Developer to submit a bug."
(This step seems somewhat ridiculous since I had to sign in with my Apple ID just to get this far. Now it wants me to sign in again.)
When I click the the "Sign in" button I get this:
An error has occurred. Please report the error to Apple Inc. by emailing the error detail to [email protected]
So, it seems the bug reporter doesn't work. This has been going on since the time of my last post here.

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USB port power management issue on apple aluminium wired keyboard after upgrade to 10.8.5

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