It is with great pleasure that I realized your porting efforts to Qt 4 in your 4.3 release of Google Earth. Your software so far lacked visual integration on Linux, but now with “googleearth -style plastique” (KDE) or “googleearth -style cleanlooks” (GNOME) it is now easy to make it look less Windows 95ish and more native. That is until you try to apply e.g. the Oxygen style, or just any 3rd party style.
The reason for that is that your product still ships with a complete set of the Qt libraries which cannot load styles installed system-wide. It would be nice if you could follow the good example of your Qt-using collegues at Skype *), who provide both a version with Qt and one that relies on the system libraries. This would also cause your application to look native instantly.
All the best,
*) Skype allows to circumvent their forced use of cleanlooks by passing “–disable-cleanlooks” as parameter.