irq 7: nobody cared (try booting with the "irqpoll" option)

Not sure what I'm going to do about this error on the AMD64 Asus M2N32-SLI Deluxe motherboard.

Aug 27 20:16:42 san1-azure irq 7: nobody cared (try booting with the "irqpoll" option)
Aug 27 20:16:42 san1-azure
Aug 27 20:16:42 san1-azure Call Trace: {__report_bad_irq+48}
Aug 27 20:16:42 san1-azure {note_interrupt+472} {__do_IRQ+183}
Aug 27 20:16:42 san1-azure {do_IRQ+57} {default_idle+0}
Aug 27 20:16:42 san1-azure {ret_from_intr+0} {default_idle+43}
Aug 27 20:16:42 san1-azure {cpu_idle+151} {start_secondary+1141}
Aug 27 20:16:42 san1-azure handlers:
Aug 27 20:16:42 san1-azure [] (usb_hcd_irq+0x0/0x54)
Aug 27 20:16:42 san1-azure Disabling IRQ #7

Putting "irqpoll" on the end of the kernel line in grub.conf causes the system to panic during boot (has to do with the 2nd core in the X2 chip).