I tried to install pyqt but there was a problem.When the program is done with the installation i couldn't find it in the menu.I went to the app manager and i pressed the uinstall to see if the program was installed,and surprisingly i saw that the size of the program was only 36kb!I uninstalled and re-installed several times but unfortunately the problem was happening again and again.Do you know what is going on?

(ps.:I installed also the maemo-cplusplus-device-env and i couldn't find it either on the menu or start it from xterminal.Do you know how can I start the program?)