Extremely high interrupt count / load on recent CURRENT

Hi everyone,

Since my last csup, I'm encountering very high interrupt counts (and
thus, a high associated interrupt load) on my workstation.

vmstat -i reports:

interrupt                          total       rate
irq1: atkbd0                       26087          1
irq14: ata0                           58          0
irq16: emu10kx0               1051388503      78968
irq17: nvidia0+                  1189799         89
irq20: ohci0                       16596          1
irq21: ehci0                           1          0
irq22: atapci1                   1387849        104
irq23: atapci2                    905538         68
irq24: arcmsr0                    176404         13
irq27: isp0                           85          0
irq28: bge0                     37642180       2827
cpu0: timer                     26627670       1999
cpu1: timer                     26595670       1997
Total                         1145956440      86071

The problem is, when I remove the snd_emu10kx driver (I load it as a
module in loader(8)), then irq28: bge0 starts to exhibit the same
pattern, generating thousands of interrupts.

My kernel is GENERIC + ULE - WITNESS, but the problem also
occured using plain GENERIC. dmesg is available at
http://rink.nu/tmp/dmesg-pitchfork.txt

Can anyone help me track this down?

Regards,

-- 
Rink P.W. Springer                                - http://rink.nu
"root is always right" -- the kernel