Unresolved symbols

[joe23]

Last Sunday I put up a post about unresolved symbols while trying to load a module for my new ethernet card. I did a search for unresolved symbols and found that they caused a wide variety of problems. I was wondering what in general causes them. Just my desire to learn more about the guts of my OS I guess. Anybody have a clue?

[X_console]

They occur when you try to load a module that doesn't match the kernel.