If this is the same problem I just had on Saturday night, it's caused by the Cardbus enabler and the aic7xxx drivers both trying to allocate the ports. RH 6.2 shipped with pcmcia-cs-3.1.8 IIRC. I didn't have an internet connection at the time I was messing with this, but I'd previously downloaded pcmcia-cs-3.1.11, so I built that. It didn't help. I ended up commenting out the check_region() call in the aic7xxx driver, and everything was happy.
I'll have to try downloading the latest version of pcmcia-cs.