Just wondering what type of mistakes players have made by accident that really made you want to throw your computer out the window? For example ,destroying wrong buildings and such?

This one time
At band camp.....

FDPing ARROW.

Typing wrong empire number, sending attacks and failing some. Had I picked the right target, the player would've been killed. The target number is just 1 number higher/lower. Warring against a clan consisting of players who signed up back-to-back. It is later revealed that those "5 players" is actually 1 person cheating. -__-

http://atarchive.gotdns.org:8080/...vepost.jsp?thread=1073429

Now, declaring war at the wrong empire (who just happens to be an ally), becoming useless for 2 days until I can make peace.

Funny enough, I've managed to set a pact with an enemy for the sole purpose to be able to foreign aid the target, to keep their net worth high enough for my clan mates to hit.