... but rest of your system still has previous versions of grub-associated programs. Check their versions:
Originally Posted by amjjawad
When you boot the previous system (ex. 10,04, 12.04) which comes with grub 1.98 or 1.99, after any kernel update your grub configuration file will be changed using previous version (1.98 or 1.98) procedures. I don't know if this is "typical", possibly will work fine.
General note: "playing" with GRUB will probably make your system not-bootable!