kernel version mismatch

[Warfride <warfride@inet.net.nz>]

Hi, I'm running a potato (2.2r0) box.

When I try to run a driver I've compiled, i get  a  kernel version 
mismatch message, complaining that the driver was compiled for kernel 
2.2.15, when I'm running 2.2.18 (I've tried 2.2.17, and 2.4test11 aswell).

I reinstalled and it didn't help.