I've discovered another problem with the Antec DataChutes that seems to behave in the same way on every CPU/motherboard I've tested it on.
After a random amount of time (usually several hours), the DataChute 'dies' and disappears from pcmcia-cs's view. The only solution I've been able to find is to stop pcmcia, re-run isapnp (with strangely will reconfigure the device, where it otherwise fails if the DataChute is still working correctly), and then start pcmcia back up.
This is a very odd problem, but it seems limited to the DataChute and not any of the other hardware I'm working with. Is there anything funky I need to add to isapnp.conf to 'keep' it configured correctly?