Karmic kernel 2.6.31-17-generic has this problem too.
iwl3945 0000:02:00.0: Microcode SW error detected. Restarting 0x82000008. iwl3945 0000:02:00.0: Error Reply type 0x00000000 cmd REPLY_TX (0x1C) seq 0x0000 ser 0x00000000
The attached file is some other stuff that came up at about the same time.
Karmic kernel 2.6.31-17-generic has this problem too.
iwl3945 0000:02:00.0: Microcode SW error detected. Restarting 0x82000008.
iwl3945 0000:02:00.0: Error Reply type 0x00000000 cmd REPLY_TX (0x1C) seq 0x0000 ser 0x00000000
The attached file is some other stuff that came up at about the same time.