I've noticed that quite a few questions are only up for an hour or two before they get flagged as answered. Take for instance the recent :
The question had been up for maybe 2 hrs, and my answer had been up for about an hour, and suddenly, they've declared it to be the right answer. I admit, I've cooked a lot of pasta, so was working mostly off of probability of what likely could've been wrong, but I have no idea if that was really wrong. Normally, you have to go and test these things.
Now, it's one thing on ServerFault or StackExchange, where we can make a few changes to a config file or source file, test it, and declare a correct answer right away ... but with cooking, you might have to try a few different things before you can find the 'best' answer for your needs.
So, the question is -- should there be some sort of a lag period between when the question is asked, and when an answer can be accepted?
(okay, there's the possibility that they were rinsing their pasta, and so knew right away that my response held what they were doing wrong, without their needing to test, but I've seen lots of other ones that are flagged as answered almost immediately that don't seem to be that sort of a situation)