I use esc omega esc a lot in my computations and yesterday I accidentally selected capital omega from the esc list by bumping a key. Now no matter how I type esc o... esc O... esc om... etc, It always puts capital omega first on the list so I have to type out the entire word esc omega esc every single time instead of just hitting tab at esc om.

How do I undo this "intelligent" feature. I realize I sound really jerky here. I love mathematica, but I am extremely disappointed with version 10 autocomplete. The lag it typing when it tries to diplay the new gui heavy dropdown is also really bad.

Help with any of these would be really appreaciated. Thanks.