Hard Starting When Hot

[Jamesp]

I have had one episode of a hard start while hot. I drove to the store and back, about 5 miles. I turned off the car in the driveway and then decided to put it in the garage. I attempted to start it about 10 seconds after turning it off and it would roll and hit, but not catch and run. It was right on the edge of starting, so on the third try I just kept the key turned until it started, which took maybe 5 seconds. It ran fine after it started. Any ideas? Normally it starts instantly - 2003 S 6 speed -