Bug#469693: Turned out to be a topology problem

[Juergen Pfennig <info@j-pfennig.de>]

Hi,
the problem can be avoided by connecting the keyboard/mouse dongle directly 
(without an extra hub). The card-reader itself works fine and causes no extra 
problems. Occasional USB-stick problems are gone. Summary:

- If the cherry-marlin keyboard/mouse usb dongle is connected via a hub the 
USB stack becomes instable and will hang after a while.

- If the same dongle is connected directly to the mobo all problems are gone.

I still consider this as a serious bug because with linux the whole USB stack 
hangs while Windows 2003 can recover this problem (the mouse hangs only for a 
second). I tried a different hub with no effect, but I did not try a 
different keyboard.

Jürgen