I fixed a little mysql configuration bug in Rails. It counted as three commits (even though they are the same thing, just in different branches), which puts me unfairly into the top 500 all time committers. ;) See here.
You'd think DHH would be number one, but actually he's not. Take a look at the list.
Here is my original pull request if you'd like to read more about it.
Ps, I also reported a capybara bug (along with a failing test) that got fixed pretty quickly. But my fork didn't get merged so none of my commits are recorded. :P