Cool, works now. Got my navbar back! Still I don't understand the advantage of "hiding" the bar in power menu ...
its actually a pretty neat feature if you ask me.
hiding the navbar is awesome for watching movies, reading comics, writing notes etc. basically everything fullscreen. you gain an extra few pixels and especially movies don't have to get cropped and now fill the whole screen.
plus some apps haven't implemented the ICS feature of dimming the navbar thus being very distracting.
if this stuff doesn't bother you i guess its useless but i have been wanting this ability ever since i moved on from honeycomb