These are the default settings of the main application window, which are taken into account only when you start the application for the first time. Each time the main window is closed it will save its current size and position in the configuration file, so you should delete these in order to force it to take into account the new default settings.
You'll find the configuration file sip-communicator.properties in the same directory as the logs: http://www.jitsi.org/index.php/Documentation/FAQ#logs
The properties you should look for are:
Hope this helps,
On May 30, 2011, at 6:43 PM, Gaetan Abessolo wrote:
when i change these settings
in the default.properties file and i compile jitsi the dimension of the Mainframe
does not change ? i don't understand why ?