I have been having a problem with the engine stalling out when I let off the gas. It always happens after I have been driving all day, so I don't think that it is a cold start issue. This has only happened, maybe, five times in the past 8 months. Now just the other day the check engine light came on and I'd like to know if this sounds familiar to anyone.

One possibility is a vacuum leak. Check all your vacuum lines, and in particular the snorkel between the AMM and the throttle body. Remove it completely so you can check the underside for leaks.
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Thank goodness we don't get all the government we pay for. -- Wiley Post

I have a similar problem that I have not tracked down yet. The check engine light on mine comes on just before the engine stalls. I believe the light comes on because of the low idle. My guess is that my idle air valve is intermittantly sticking. When you deccelerate to stop the valve closes to increase the intake vacuum. It should open to maintain idle when the car is stopped. I am guessing that mine sticks closed, causing the car to stall.

Mine also appears to be sticking closed at really cold temperatures. At minus 20 celcius I have to hold the gas pedal down to get the car started.

I can't confirm this since it does not happen all the time. The valve always passes the function test on the LH diagnostic unit. I plan to try swapping in a new or known working valve at some point to confirm this.