I've been using 12.04 since it was in beta 1, and have really enjoyed the HUD feature. As soon as it was officially released, or very soon after, the HUD stopped working in some of the apps I like. The biggest on is in chromium.
During beta, while browsing the web, I would quickly tap alt and type history then and I would be taken to my history page. Now, I can't get any commands at all to work in chromium, nor in opera.
This feature has so much potential, I don't want to be stuck with a broken HUD