Interrupt storm on IRQ11

List;

I get the following on boot in -current;

       Interrupt storm detected on "irq11:"; throttling interrupt source

If I have my atheros card in the laptop (Dell C600) during boot I can 
then do "kldload if_ath" and I'm good to go. If I plug the card in 
anytime *after* I get to the login prompt it's non-functional.

When the card is in the slot at boot, and after I "kldload if_ath" I see;

        ath_hal: 0.9.16.16 (AR5210, AR5211, AR5212, RF5111, RF5112, 
RF2413, RF5413)
        ath0: <Atheros 5212> mem 0x88000000-0x8800ffff at device 0.0 on 
cardbus1
        ath0: Ethernet address: 00:13:46:b6:19:ea
        ath0: mac 7.8 phy 4.5 radio 5.6

If I plug the card in later all I see is;

        ath_hal: 0.9.16.16 (AR5210, AR5211, AR5212, RF5111, RF5112, 
RF2413, RF5413)

I'm wondering if this is related to RM's recent commits.

(full dmesg attached).

Thanks,
Patrick

Copyright (c) 1992-2006 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
	The Regents of the University of California. All rights reserved.
FreeBSD 7.0-CURRENT #1: Sat Apr  1 21:34:55 CST 2006
    pbowen_at_sg1.sgc.org:/usr/obj/usr/src/sys/GENERIC
WARNING: WITNESS option enabled, expect reduced performance.
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: Intel Pentium III (601.37-MHz 686-class CPU)
  Origin = "GenuineIntel"  Id = 0x68a  Stepping = 10
  Features=0x383f9ff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR,SSE>
real memory  = 536719360 (511 MB)
avail memory = 515604480 (491 MB)
kbd1 at kbdmux0
npx0: [FAST]
npx0: <math processor> on motherboard
npx0: INT 16 interface
acpi0: <DELL CPi R  > on motherboard
Timecounter "ACPI-safe" frequency 3579545 Hz quality 1000
acpi_timer0: <24-bit timer at 3.579545MHz> port 0x808-0x80b on acpi0
cpu0: <ACPI CPU> on acpi0
acpi_acad0: <AC Adapter> on acpi0
battery0: <ACPI Control Method Battery> on acpi0
battery1: <ACPI Control Method Battery> on acpi0
acpi_lid0: <Control Method Lid Switch> on acpi0
acpi_button0: <Power Button> on acpi0
acpi_button1: <Sleep Button> on acpi0
pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff on acpi0
pci0: <ACPI PCI bus> on pcib0
agp0: <Intel 82443BX (440 BX) host to PCI bridge> on hostb0
pcib1: <ACPI PCI-PCI bridge> at device 1.0 on pci0
pci1: <ACPI PCI bus> on pcib1
vgapci0: <VGA-compatible display> port 0xec00-0xecff mem 0xf8000000-0xfbffffff,0xfdffc000-0xfdffffff irq 11 at device 0.0 on pci1
cbb0: <TI1420 PCI-CardBus Bridge> at device 3.0 on pci0
cardbus0: <CardBus bus> on cbb0
pccard0: <16-bit PCCard bus> on cbb0
cbb1: <TI1420 PCI-CardBus Bridge> at device 3.1 on pci0
cardbus1: <CardBus bus> on cbb1
pccard1: <16-bit PCCard bus> on cbb1
isab0: <PCI-ISA bridge> at device 7.0 on pci0
isa0: <ISA bus> on isab0
atapci0: <Intel PIIX4 UDMA33 controller> port 0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0x860-0x86f at device 7.1 on pci0
ata0: <ATA channel 0> on atapci0
ata1: <ATA channel 1> on atapci0
uhci0: <Intel 82371AB/EB (PIIX4) USB controller> port 0xdce0-0xdcff irq 11 at device 7.2 on pci0
uhci0: [GIANT-LOCKED]
usb0: <Intel 82371AB/EB (PIIX4) USB controller> on uhci0
usb0: USB revision 1.0
uhub0: <Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1> on usb0
uhub0: 2 ports with 2 removable, self powered
pci0: <bridge> at device 7.3 (no driver attached)
pcm0: <ESS Technology Maestro3> port 0xd800-0xd8ff mem 0xf3ffe000-0xf3ffffff irq 5 at device 8.0 on pci0
pcm0: <SigmaTel STAC9721/23 AC97 Codec>
xl0: <3Com 3c556 Fast Etherlink XL> port 0xd400-0xd4ff mem 0xf3ffdc00-0xf3ffdc7f,0xf3ffd800-0xf3ffd87f irq 11 at device 16.0 on pci0
miibus0: <MII bus> on xl0
tdkphy0: <TDK 78Q2120 media interface> on miibus0
tdkphy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
xl0: Ethernet address: 00:04:76:48:c7:b2
pci0: <simple comms> at device 16.1 (no driver attached)
acpi_tz0: <Thermal Zone> on acpi0
atkbdc0: <Keyboard controller (i8042)> port 0x60,0x64 irq 1 on acpi0
atkbd0: <AT Keyboard> irq 1 on atkbdc0
kbd0 at atkbd0
atkbd0: [GIANT-LOCKED]
psm0: <PS/2 Mouse> irq 12 on atkbdc0
psm0: [GIANT-LOCKED]
psm0: model Generic PS/2 mouse, device ID 0
fdc0: <floppy drive controller (FDE)> port 0x3f2-0x3f5,0x3f7 irq 6 drq 2 on acpi0
fdc0: [FAST]
sio0: <16550A-compatible COM port> port 0x3f8-0x3ff irq 4 flags 0x10 on acpi0
sio0: type 16550A
sio0: [FAST]
ppc0: <ECP parallel printer port> port 0x378-0x37f,0x778-0x77b irq 7 drq 3 on acpi0
ppc0: SMC-like chipset (ECP/EPP/PS2/NIBBLE) in COMPATIBLE mode
ppc0: FIFO with 16/16/8 bytes threshold
ppbus0: <Parallel port bus> on ppc0
plip0: <PLIP network interface> on ppbus0
lpt0: <Printer> on ppbus0
lpt0: Interrupt-driven port
ppi0: <Parallel I/O> on ppbus0
ppc0: [GIANT-LOCKED]
pmtimer0 on isa0
orm0: <ISA Option ROM> at iomem 0xc0000-0xcffff pnpid ORM0000 on isa0
sc0: <System console> at flags 0x100 on isa0
sc0: VGA <16 virtual consoles, flags=0x300>
sio1: configured irq 3 not in bitmap of probed irqs 0
sio1: port may not be enabled
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
Timecounter "TSC" frequency 601367225 Hz quality 800
Timecounters tick every 1.000 msec
Interrupt storm detected on "irq11:"; throttling interrupt source
cardbus1: <network, ethernet> at device 0.0 (no driver attached)
ad0: 19077MB <FUJITSU MHS2020AT E 8307> at ata0-master UDMA33
acd0: CDRW <HL-DT-ST CD-RW GCE-8080N/2.06> at ata1-master PIO4
Trying to mount root from ufs:/dev/ad0s1a
cpu0: too many short sleeps, backing off to C1
ath_hal: 0.9.16.16 (AR5210, AR5211, AR5212, RF5111, RF5112, RF2413, RF5413)
ath0: <Atheros 5212> mem 0x88000000-0x8800ffff at device 0.0 on cardbus1
ath0: Ethernet address: 00:13:46:b6:19:ea
ath0: mac 7.8 phy 4.5 radio 5.6
ath0: link state changed to UP