Prior to any of the Hotfixes#1,#2,or #3 I had no issues whatsoever. Foolishly,against my better judgement,after installing all the Hotfixes and still running error-free-freeze up-free,I downloaded the latest Base Package v 2922 which is supposed to incorporate all those Hotfixes,etc,etc.And now,I will get to the taxi-ing stage,go to the OH panel to switch on main landing lights,and the whole OH panel just freezes-up.I can use the A key to cycle through the 2D to VC modes,but that is all I can do.Back into 2D,still frozen out. Then it all of a sudden unfreezes,gives me a momentary access to the OH panel,then promptly re-freezes. Anyone else experiencing these kinds of lock-ups post-cumulative Base Package install? Pity I deleted the very original download,so cannot go back to it.