Kernel 2.4.18 panic on orinoco null event

Help please?!? The wireless card in my laptop + its driver is causing a kernel panic.

HW:

	laptop with built-in 802.11b card
	P4 1.7

OS:
Debian Woody & kernel 2.4.18

running dhclient-2-2-x causes the following error:

Unable to handle kernel NULL ponter dereference at virtual
address 0000 0078
Tainted: P
Kernel panic: killing interrupt handler!

eth1: Null event in orinoco_interrupt!

Thank you.