On QT-Curve we have the option to use Opacity-tweaks for Windows, Dialogs, and Pop-Up Menus. Falkon ceases to function properly when I use Translucent Windows. I know this is a Falkon problem because my QT-Curve theme works on all apps with the exception of Falkon and Kup-Backup. Translucent Dialogs and Pop-Up Menus work without any problems.