Power management problem with USB modem

I now use a MS-6743 (i865G) board. My previous board was MS-6533, it did not have USB v2.0.
The problem is my Aztech (originally Smartlink) USB modem prevents the system going into standby mode but this should be a USB 2.0 issue because I'm using the same driver for the modem like previous mainboard config. I could go into standby mode flawlessly with my old board.
Furthermore I'm using USB keyboard, mouse but no power management property dialog box appear for those devices. So I'm pretty sure the problem is because of USB 2.0. Is there a way to come around this issue? Thanks in advance...

To pin point whether or not IRQs conflicts is to be blamed, please kindly post your IRQs conflicts for us to verify.
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Hi,
Check whether all the supported patches are installed.
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SlashSupport
A couple of weeks ago I installed quite a few of the
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Since then, I get the following message repeated
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Power management problems
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Quote from: Bas on 20-November-09, 21:57:20
Did you install all the drivers listed here?
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Power management problem with USB modem

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