An ACPI system will often put many peripherals on the same IRQ. This normally presents no problem.
Please post the STOP code and bugcheck parameters. Without that information, anything we post here is just a wild-ass guess.
STOP 0x11111111 (0x22222222, 0x33333333, 0x44444444, 0x55555555)
We need numbers 1, 2, 3, 4, and 5 to help you.
-Nevo