I am getting keycodes errors but am a bit confused as to why.

Is it normal for the errors to come up even if you dont press a key that isnt unknown.

ie. Ive just finished my LFS install and booted up for the first time. I simply typed in root and the password (just 5 regular letters), smiled because it worked, and then typed shutdown -r now.

I must have had the keycode errors pop up a dozen times.
All the letters I pressed worked, and I didnt press anything else.

Seems odd because the errors says....
'unknown key pressed...'
Its a MS wireless k/b incase anyone can point me in the direction of a list of the codes.

Just wondering if this is normal....
Im obviously gonna try n fix it! but am confused to which keys arn't known.