I'm prepping Google Earth 5 for deployment, and found an issue that appears to be a bug/peculiarity in the QT libraries. When you first launch it, everything is working and nicely anti-aliased. But as you start navigating through the maps the fonts all blink and then turn into white blocks (shot below). If you go into preferences and pick another font, then it seems to repaint and fix itself. I haven't tinkered with QT stuff since we moved from KDE to GNOME, so if anyone has some ideas...drop a comment!