PhpStorm 1.0.2 hangs with empty splash screen...

PhpStorm looks very promising but I have one problem when starting it... Sometimes I get only gray empty splash screen and PHPStorm does not start. I have to kill the process and start it again.Usually it starts ok  second time right after the first try...

Anybody else experiencing this? I have PhpStorm-1.0.2, Sun Java JDK 1.6.0_22 and Xubuntu Linux 10.04.2.

Any ideas to troubleshoot this? If I start PhpStorm from command line, it displays no errors when it hangs...

Cheers,
Marko