[Regression] iwl3945 debug spew

The iwl3945 driver has started to spew hundreds of megabytes of kernel messages into my syslog, kern.log, and debug log files. It seems this started with the 2.6.24-7-generic kernel (I'll try with an earlier kernel to see if it occurs there too).

While my laptop is connected to the AP via wifi, the messages appear like this:
...
Feb 13 09:18:24 CowboyLaputopu kernel: [ 1557.603710] wme:wme_qdiscop_enqueue ht_queue=4,queue=2 pool=0xF qdisc=ffff81007cdde0c0
Feb 13 09:18:24 CowboyLaputopu kernel: [ 1557.604167] wme:wme_qdiscop_enqueue ht_queue=4,queue=2 pool=0xF qdisc=ffff81007cdde0c0
Feb 13 09:18:24 CowboyLaputopu kernel: [ 1557.605640] wme:wme_qtdiscop_enqueue ht_queue=4,queue=2 pool=0xF qdisc=ffff81007cdde0c0
Feb 13 09:18:30 CowboyLaputopu kernel: [ 1563.394353] wme:wme_qdiscop_enqueue ht_queue=4,queue=2 pool=0xF qdisc=ffff81007cdde0c0
Feb 13 09:18:30 CowboyLaputopu kernel: [ 1563.394438] wme:wme_qdiscop_enqueue ht_queue=4,queue=2 pool=0xF qdisc=ffff81007cdde0c0
Feb 13 09:18:30 CowboyLaputopu kernel: [ 1563.394470] wme:wme_qdiscop_enqueue ht_queue=4,queue=2 pool=0xF qdisc=ffff81007cdde0c0
...

While the laptop is not associated, different messages appear:
...
Feb 13 18:52:33 CowboyLaputopu kernel: [35988.691866] wlan0_rename: RX WEP frame with unknown keyidx 1 (A1=ff:ff:ff:ff:ff:ff A2=00:18:4d:05:15:00 A3=00:0f:ea:85:16:d0)
Feb 13 18:52:33 CowboyLaputopu kernel: [35988.691880] eth2: RX WEP frame with unknown keyidx 1 (A1=ff:ff:ff:ff:ff:ff A2=00:18:4d:05:15:00 A3=00:0f:ea:85:16:d0)
Feb 13 18:53:16 CowboyLaputopu kernel: [36031.954636] wlan0_rename: RX WEP frame with unknown keyidx 1 (A1=01:00:5e:7f:ff:fa A2=00:18:4d:05:15:00 A3=00:18:f3:cf:38:ea)
Feb 13 18:53:16 CowboyLaputopu kernel: [36031.954650] eth2: RX WEP frame with unknown keyidx 1 (A1=01:00:5e:7f:ff:fa A2=00:18:4d:05:15:00 A3=00:18:f3:cf:38:ea)
Feb 13 18:53:16 CowboyLaputopu kernel: [36031.956399] wlan0_rename: RX WEP frame with unknown keyidx 1 (A1=01:00:5e:7f:ff:fa A2=00:18:4d:05:15:00 A3=00:18:f3:cf:38:ea)
Feb 13 18:53:16 CowboyLaputopu kernel: [36031.956409] eth2: RX WEP frame with unknown keyidx 1 (A1=01:00:5e:7f:ff:fa A2=00:18:4d:05:15:00 A3=00:18:f3:cf:38:ea)
...

This spew continues until my root partition is full.

ProblemType: Bug
Architecture: amd64
Date: Wed Feb 13 18:47:42 2008
DistroRelease: Ubuntu 8.04
NonfreeKernelModules: nvidia
Package: linux-image-2.6.24-7-generic 2.6.24-7.12 [modified: lib/modules/2.6.24-7-generic/modules.pcimap lib/modules/2.6.24-7-generic/modules.dep lib/modules/2.6.24-7-generic/modules.ieee1394map lib/modules/2.6.24-7-generic/modules.usbmap lib/modules/2.6.24-7-generic/modules.isapnpmap lib/modules/2.6.24-7-generic/modules.seriomap lib/modules/2.6.24-7-generic/modules.alias lib/modules/2.6.24-7-generic/modules.symbols]
PackageArchitecture: amd64
SourcePackage: linux
Uname: Linux CowboyLaputopu 2.6.24-7-generic #1 SMP Thu Feb 7 00:56:31 UTC 2008 x86_64 GNU/Linux