Version: 0.50.80 (using 4.00.83 (KDE 4.0.83 (KDE 4.1 Beta2), MS Visual Studio 2005 SP1) Compiler: cl.exe OS: Microsoft Windows (i686) release 5.1 (XP Professional) After searching with some parameters in Search ICQ contact window choose any found contact and open it's information window. After closing that window the previous window becomes blocked. The only way to close it - ALT+F4 or closing the Add ICQ contact window (if it can be reached). It also becomes unreachable if you haven't entered any search parameters and pressed Search button - the alert message is shown then, and after that the window is blocked the same way as above. Bug on MSVC version of KDE4 on Windows XP SP2.
I can confirm that bug with the same software and compiler versions under Windows Server 2003.
Works in KDE 4.2 with Qt 4.4.3