MajorRT wrote:did it once, and lost the game because the next guy finished wiping out the guy i started to....prob should get the warning pop-up, esp. if playing tired

Careful. Even the pop-up isn't fool-proof. After accidentally clicking enough times, I started using the pop ups for end attacks and end forts. After using it for long enough, I got so used to clicking the 'OK' button, that I would do it automatically every time I clicked 'end-whatever', and started making mistakes even with the pop-ups. That's when I realized that I, and only I can take responsibility for my moves, no matter how many "helpers" I was using. I haven't used the warnings in a long time, and I've ended mistakenly less often since I stopped using them.
In my opinion, the best way to avoid making these mistakes, is to make them. Once you've done it often enough, you'll start to be more careful, and observant, and a better player as a result.