I successfully installed (no problems reported) intellij 10.5.
However, when I launched the idea, the application got stuck in the "Loading modules" window ...
any ideas ...? (sorry for the pun ...)
This is mistake.
Try disabling Tip of the Day and Show Performance Tips. They are in the Help menu.
It was reported several times.
http://youtrack.jetbrains.net/issue/IDEA-67401
Also see problems: WI-6327, WI-5994