A few days ago, I upgraded from Xubuntu 14.04 to 15.04
As far as I can see everything works quite smoothly. However the upgrade deleted my jitsi client (no big deal,configurations weren't touched so I reinstalled it), but what surprised me is that some applications look really ugly now, specifically the Skype client and the Keepassx-Manager look like Win95.
Any idea how to fix this?
Install
qt4-qtconfig
Start via terminal
or via your app launcher
Qt 4 Settings
and change the style here