Sorry forgot to post specs...
Windows 7 64 bit , 2gb RAM
Client ver. 0.4.0 (before was on 0.2.0)
When I start the client I can see the first screen (veryfiyng blockchain, loading addresses, ...) but then when the gui should show up nothing happens. However I can see the icon in the task bar,when I right click on it i can see options, debug window, exit and so on. So the client is working working properly just the gui isn't. Worked like a charm for few days but suddenly no gui.