I keep running into this, for some reason after a little while of using Live, I can no longer use the Alt+Cmd+B shortcut to open the browser, nothing happens. It'll work fine for a bit, then just stop. I thought it might be happening after I open Battery 3, but I can't reproduce it.
And while i have your attention

is there a key command to show the instrument plug in window for the current selected track? IE, I'm editing a midi part and want to see the plug in it's assigned to, without having to hit F12 to flip the clip pane, open the plug in, then flip back.
Gracias.