Same wake turbulence anomally here as well. Found this thread after I experienced the excact same effect as Slait. Shut off the Wake turbulence effect, problem solved.I am also very happy with Active Sky and have been using it for years. ASA/ASE Rocks!FS9 SP1 on WINXP SP3,ASE SP3 B647 on WideFS 6.780 & FSUIPC 3.980 WideFS PC WINXP SP3