I got no problems with ACPI but APIC does my head in
ever had game pausing for a split second then carry on only for it to do it again.....9/10 it due to apic and it's worse on VIA based mobos. The NF ones don't seem to suffer has much but to be on the safe side i turned it off along with my serial ports and parrel port and when i get round to it i'll do same to the floppy drive and use a usb one when needed