interior lights on A4

["frontstage" <frntstg9@allinux1.alliance.net>]

i've got a problem...it goes like this:
when you open the door the dome light comes on and then goes out after a
while like it's supposed to...
when you open the door and get in and turn the ignition key the light is
supposed to go out...it stays on for a while...
this can really get to you at night or when it's dark because all the light
is inside...
i've completely redone the stereo but i don't see how i could have done
anything to the dome light wires, i was nowhere near them (knock on
wood)...
is there a timer that i can somehow adjust?
does anyone know how to fix this?
tia
 frntstg9@mail.alliance.net