After installation of hotfix#1 no more panel freeze but very strange behaviour of the aircraft. After setup en flying the EHAM -EGGL route a/c didn't follow the computed nav-track in the LNAV mode and A/P engaged. Also a strong and heavy reaction in the column (up/down). After selecting form LNAV to HDG the a/c goes there own way and makes very strange left and right roll movements.My passengers don't like this and use there sick bags for this rollercoaster flight.After the installation of the latest hotfix, again panel freeze after A/C setup and a short flight. Onle the sceney is moving and the A/C follow the latest heading.All my other FSX A/C working fine for example Level D767, iFly and the Fokker 100/70 etc.So what's wrong with the PMDG aircraft's? My system is a iMac 27" with a 2.93 GHz i7 processor and 8 GB 1333 Mhz memoryI use Bootcamp with Windows XP SP2 and FSX with SP2So i'm waiting on a final and "real" PMDG updateRegardsJovabra

I had the same issue the other day. The aircraft was banking left then right then climbing and descending.Passengers must have been green Have you installed the 3rd Patch??Since doing so I have no seen any problems at all. It was very odd and I can't tell you what the cause was, I wish I did know. Andy

I ran in some strange behavior too but a reinstall of the NGX solved it for me.