Windows maximize in the wrong display
Solution 1:
The comment to the other answer is the best solution:
It's apparently a bug of Chrome on Ubuntu 12.04.
Workaround: instead of maximizing Google Chrome using the maximize button or drag-to-top on display 1, do the following: 1. ctrl+super+left 2. ctrl+super+up
So to maximize Google Chrome, press ctrl+win+← then ctrl+win+↑