3com 3CCFEM556B pcmcia crashes machine

[Harry Barrantes | Diotronic de Centroamérica S.A.]

Hi people, I have a 3com 3CCFEM556B pcmcia lan+modem, when I connected it
shows the model and the next two last lines after machine crashes:
 

sio4: type 16550A with a bogus IIR_TXRDY register
sio4: unable to activate interrupt in fast mode - using normal mode

I think that it is a IRQ problem, but doesn't have the experience to solve
it.

Any suggestion?


Harry Barrantes