Problem with wireless card

[Riccardo Gusso <grick@tiscalinet.it>]

I have a strange problem with my wireless pcmcia card ZyAir b -100.
I am using this confugration for it in /etc/pcmcia/config:

card "Zyxel ZyAir B-100"
  manfid 0x0274, 0x1613
  bind "orinoco_cs"

The card works, but sometimes it hangs up and I receive this message in 
console:
eth1: Error -110 writing TX descricptor to BAP

infintely repeated until I deactivate the card. And from top at the same time 
I notice that process ksoftirqd_CPU0 is consuming 90% of cpu, while usually 
it sleeps.
Any suggestione to solve this inconvenience?
Bye, 
            Rick