I've been trying to run my characters using keys instead of the mouse, using the ideas supplied by Gingerspyce. However, I have a recurring problem which seem to affect my higher lev characters.

I have "Attack" mapped to Num Enter but sometimes it just switches itself off. I can get the functionality back by reselecting weapons a couple of times but even that is inconsistent.

I also have "Attack / Interact" mapped to "Button 0"

Does anyone have a solution?