1999 Oldsmobile Cutlass

Computer problem
1999 Oldsmobile Cutlass 6 cyl Front Wheel Drive Automatic 108000 miles

When I get into my car sometimes my theft system light will jump on and my car won't start for about 15 minutes. I have been trying to figure out what causes this to happen and how can I stop it. Is there anything that I can do to reset it without having to wait the 15 minutes. Obviously if I am in a rush I don't want to have to wait for the car to reset. Please help me
February 20, 2008.

Might be having an intermittent problem reading the key, try this to reprogram
- Ignition to " run" position, try to start and let key return to " run" position
Approx ten minutes security light will go off
turn key " off" and wait 5 seconds
repeat 2 more times for a total of 3 relearns. Turn key off, then start car

Feb 20, 2008.