It depends on how well you know the aircraft you fly, as well.
I had a malfunctioning gear light for awhile. I knew the front gear was locked and that the switch had just fallen out of alignment slightly. Once that was repaired (due to a cracked stiffener), all worked fine. Until, it started to go out again. The landing gear also "felt" slightly different, mushier somehow, on landings. I decided to have a look at it and as I landed at my mechanic, the front gear collapsed as they wheeled her into the hangar! Was another major structural crack hidden behind a panel that had not been seen earlier. But I had a feeling something wasn't right this second time around - sometimes they'll give you a hint.