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#31
Well the only case I know of this happening was a dev friend of mine that installed the direct x d3d sdk package, apparently something ie9 was not fond of. The only fix he found was to disable the hardware acceleration in ie9. Not really much a solution though because it reduces video quality on streaming sites for a lot of people.
Anyhow it never hurts to make sure your drivers are up to date.
Only other thing I notice is you have mix under memory. If the timings don't match perfectly that can cause little annoying issues.
As you said it is nothing but an annoyance though.
I've been playing half life 2 based games for years and they always crash on closing in both vista and win 7. It doesn't actually affect their functionality though.