More APIC woes

I noticed yesterday that the output from /proc/interrupts listed usb and network on the same irq (see 11).

         CPU0       CPU1    
0:     485920      18674          XT-PIC  timer
1:       8081        626          XT-PIC  i8042
2:          0          0          XT-PIC  cascade
5:     119443       4243          XT-PIC  libata
8:          0          0          XT-PIC  rtc
10:     299716      11836          XT-PIC  HDA Intel, nvidia
11:     501067      24435          XT-PIC  ohci_hcd:usb1, eth0
12:     104435      12826          XT-PIC  i8042
14:         19          5          XT-PIC  ide0
NMI:        302        233
LOC:     504576     504559
ERR:    1591283
MIS:          0

I had hopes of having usb work now that I had switched everything to XT-PIC (noapic). Of course, that would be too easy. I clearly don't understand the full ramifications of turning APIC off, but without it, there is no USB. I can only assume it is receiving no interrupts. At least my network card still works.