wi driver failure

I have found a rather strange bug w/ the wi driver (pcmcia card.)  After I 
have been on a wireless network for a while, usually around 3.5hours or 
greater all of sudden the association drops and I get the following:

Dec 30 23:02:31 thor kernel: wi0: timeout in wi_cmd 0x0002; event status 
0x8009
Dec 30 23:02:31 thor kernel: wi0: timeout in wi_cmd 0x0000; event status 
0x8009
Dec 30 23:02:32 thor kernel: wi0: wi_cmd: busy bit won't clear.
Dec 30 23:02:32 thor kernel: wi0: init failed
Dec 30 23:02:32 thor kernel: wi0: failed to allocate 2372 bytes on NIC
Dec 30 23:02:32 thor kernel: wi0: tx buffer allocation failed (error 12)
Dec 30 23:02:32 thor kernel: wi0: interface not running

ejecting and reinserting the card only causes more of these errors when i 
try to dhcp or other send a packet.  The "fix" is resetting the ap.  It is 
a rather old AP but I'm fairly certain that freebsd needs to somehow trap 
this problem.  I'm going to try to find packet logs of this phenomenon but 
have been unsuccessful so far.

-James Nobis