Another thing to try 

Forum: PCMCIA Installation and Configuration Issues
Re: d-link dfe-660tx cardbus: eth0: Tx hung, 9 vs. 0. ?????? (Jochen Kirsch)
Re: still same symptoms... (Jochen Kirsch)
Date: 2000, Apr 03
From: David Hinds <dhinds@pcmcia.sourceforge.org>

Try setting PCIC_OPTS="irq_mode=2" -- Dave

to: "Another thing to try"