fc14->fc15 usb 3.0 not working

[Monty Clift]

hi,
i have used preupgrade to moved from fc14 to fc15. with fc14 i had my two usb 3.0 ports working. however, with fc15 my usb 3.0 ports are disabled. i have read the instruction at the common fc15 bugs doc and removed the kernel parameter xhci.enable=1 and also erased the file /etc/pm/config.d/xhci. still the usb 3.0 ports are not working.
i am using kernel 2.6.38.6-26.rc1.fc15.x86_64. i cannot use the 2.6.38.6-27.fc15.x86_64 since there no nvidia drivers for it.
any advice will be appreciated.
monty
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