Incorrect karma awarded when an administrator marks accepted answer for another user's question

In addition to the bug that an admin marking an answer as accepted triggers the wrong karma rewards, yes that might be useful... although I would set the karma bonuses for both of those to zero. The former to prevent cheating (see http://askbot.org/en/question/6808/user-gains-karma-for-accepting-own-answer/) and the latter because only admins would be able to do that, and they don't need karma.

If i understand the problem correctly, I think it's open to debate as to whether it's a bug. Some people might want to reward their admins for essentially keeping the site clean and up-to-date. And it's also possible that admins might want to reward users for answering their own posts. Making it an option allows site maintainers to set it up how they want. Generally though, I agree, and think that most people would have these set to zero.