I'm running Mdk 10 - it happens with both 2.4 and 2.6 kernels.

It happens as soon as I insert my card ( even if drivers are not loaded) and
cardbus manager detects the card.

I checked processes and I find keventd has 99% CPU utilization.

Laptop is a cpq presario 1720US. The card works OK when driver is loaded.
But system is slow. WHen card is removed or PCMCIA stopped, system returns
to normal.