Toshiba laptop support has known problems that can't be solved without
help from Toshiba. And the Xircom CardBus driver is also known to
have problems, and is "experimental".
System log messages are often a good place to start.
I switched Xircom cards and now am using the RE-100 (16-bit 10/100 card). When I boot I get depmod errors not related to the card (scsi, ide, etc.) and I hear the "good" beeps. As soon as the login prompt appears, I cannot type into the concole. The 3-finger salute also fails. I can boot into single user to modify things but nothing I have tried works. The network is up though because I can telnet into the laptop.