Dear Ralf, I have updated at work from 3.0.3 to 3.1. More or less the same problems as everybody but now all is Ok. ... less one big important thing to me. I'm using OpenGL aplications I have realise that qt is not compiled (I think) with OpenGL option. I have tried to recompile myself, but I have found unmet dependencies (devhelper). Please could you try to resolve this? or there's some way to recompile the libqt package with opengl support? Thank's in advance. Leo