Kernel Panic Airport com.apple.driver.AirPortBrcm

Question

Been getting a Kernel panic, same reasons in console.  Can anyone shed any light on this for me?
PowerBook G4 17" 2003 model running 10.5.8 1GB Ram installed.
Does not happen when running direct into Ethernet, only when using Wifi
I have an AEBS, dual band, but I did set it to G only (in an effort to help route out the cause).
Unresolved kernel trap(cpu 0): 0x300 - Data access DAR=0x000000000000000C PC=0x00000000002AF41C
Latest crash info for cpu 0:
   Exception state (sv=0x34c61c80)
      PC=0x002AF41C; MSR=0x00009030; DAR=0x0000000C; DSISR=0x40000000; LR=0x00D1476C; R1=0x2BB03C00; XCP=0x0000000C (0x300 - Data access)
      Backtrace:
0x00D146A0 0x00D24BB0 0x00CC4EC4 0x0035CED0 0x0035C134 0x0035C1E8
         0x000B1DD4
      Kernel loadable modules in backtrace (with dependencies):
         com.apple.driver.AirPortBrcm43xx(366.91.21)@0xcbb000->0xde7fff
            dependency: com.apple.iokit.IO80211Family(216.1)@0xc97000
            dependency: com.apple.iokit.IOPCIFamily(2.6)@0x55f000
            dependency: com.apple.iokit.IONetworkingFamily(1.6.1)@0xbfb000
Proceeding back via exception chain:
   Exception state (sv=0x34c61c80)
      previously dumped as "Latest" state. skipping...
   Exception state (sv=0x1ea1e500)
      PC=0x00000000; MSR=0x0000D030; DAR=0x00000000; DSISR=0x00000000; LR=0x00000000; R1=0x00000000; XCP=0x00000000 (Unknown)
BSD process name corresponding to current thread: kernel_task

Answer 1

try this:
go into System Preferences, Network, Airport, delete those networks that your system remembered.
Go into Keychain and delete all Airport related keychains (be careful not to delete anything else)
Open Airport Utility and choose reset to factory and then go through and setup exactly like before (or making any changes you wanted).
Try this using the NEW AU that came out last week..