IO Scheduler Cfg Registered Linux Install Error

So I just got done fighting with an install of Cent-OS 5 on a new M2N-SLI motherboard. It seemed to boot fine but then hung (hangs) at the line:

io scheduler cfg registered

After some fruit-less searching, I finally found a quick comment that it seems to be a USB issue. Disabling the onboard USB controller in the BIOS seems to have completely resolved the issue. I also saw:

warning: many lost ticks.
Your time source seems to be instable or some driver is hogging interup

It may be that the USB controller on this board is not fully supported. I found some posts which seemed to indicate that this may have been fixed in >2.6.20 kernels but I'm not sure of this.

If someone has any information they'd like to add to this, please let me know.

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