Air Bag light 10 seconds????

[BriceW at webtv.net]

After pulling the cluster and replacing bulbs you begin to notice a lot
of things. My air bag light comes on as it should whenever I start the
car. Per the owners manual it it should only stay on 10 seconds. The
manual says that if it stays on too long you could have a malfunction in
the airbag system. But the owners manual doesn’t specify what is too
long but only says 10 seconds or more.
Mine stays on 80 seconds.
I just wondered if any of you have noticed how long yours stays on
before and if there is possible malfunction.