A few months our oven would light immediatly. Sometimes it would take 3 or 4 minutes before it started to heat. Then for a few months there were no problems. As of yesterday it started doing it again.
Not sure if this would be a problem with the starter element, control, or another part.

Just a side note. The control panel has been a pain in the butt for a little while now. It the push controls and they don't respond like they used too! Sometimes you have to work a little to get the buttons to respond.