i use kmplayer to play flashs but in the last time i have many crashs so id like try the native way to playing flash. The problem is that eg in youtube i have a black window, i listen the sound but no image. In sites with a flash banner, i have nothing (white)
In the konquerors plugins all plugins are detected
http://img835.imageshack.us/img835/3103/plugins.png

Which version of Qt are you using? Apparently 4.7 has a breakage with QXEmbed.

unfortunately i use the 4.7
qt4-common-4.7.0-0.1mdv2010.1