my interior light is stuck on, even when the door is closed.

ive taken the bulb out for now as i havent had a chance to have a proper look. DAMN RAIN

has this happened to any one before and is it a easily fixable problem or does it sound like i need a new door switch

mine does this on occasions when i've been fiddling around with fuses and stuff like that.

i think last time it just turned off eventually, can't really remember to be honest