100% of one CPU for nvidia

[Zaphod Beeblebrox]

Has anyone noticed the latest nvidia binary driver driving their interrupt
load up?  I have:

nvidia0: <GeForce 8700M GT> port 0xef00-0xef7f mem
0xfd000000-0xfdffffff,0xd0000000-0xdfffffff,0xfa000000-0xfbffffff irq 16 at
device 0.0 on pci3
nvidia0: [GIANT-LOCKED]
nvidia0: [ITHREAD]
nvidia1: <GeForce 8700M GT> port 0xdf00-0xdf7f mem
0xf7000000-0xf7ffffff,0xe0000000-0xefffffff,0xf8000000-0xf9ffffff irq 17 at
device 0.0 on pci4
nvidia1: [GIANT-LOCKED]
nvidia1: [ITHREAD]

and

nvidia-driver-169.07 NVidia graphics card binary drivers for hardware OpenGL
ren

FreeBSD canoe 7.0-RC3 FreeBSD 7.0-RC3 #0: Wed Feb 20 15:19:37 EST 2008
root at canoe.dclg.ca:/usr/obj/d/64/usr/src/sys/CANOE32  i386

(and 7.3_1 of xorg)

and my top shows the following whenever X is active (note the 43.2%interrupt):

last pid:  9412;  load averages:  1.14,  0.89,  1.84    up 0+13:35:32
13:33:15
145 processes: 1 running, 133 sleeping, 11 stopped
CPU states:  0.2% user,  0.2% nice,  1.7% system, 43.2% interrupt, 54.7%idle
Mem: 648M Active, 2018M Inact, 309M Wired, 31M Cache, 112M Buf, 181M Free
Swap: 16G Total, 16G Free


My xorg.conf is configured to only use one of the GPU devices.