>I have installed Mathematica 4.2 on a linux machine running kernel 2.4.20.
>I discovered that I need different passwords if you use your computer with/without ethernet card (pcmcia), since my MathId changes once the MAC address on the card changes (I use a wireless card at home and a NIC at school). Is there a way to have mathematica working with/without the ethernet cards?
Contact Wolfram Technical Support at email@example.com.
>I need to recompile the kernel (upgrade to 2.5 series). Is my password going to change?
It is likely that your MathID will change, requiring a new password.