Hello, I'm the guy who wrote powerlaunch and I know exactly the problem you're having. Basically, if any program requests a "display blank pause" then the screen will never be blanked ever again because the blank pause is not reset. This was fixed about a month ago in svn but I haven't had the time to make another complete release. Here's a temporary fix. Try replacing the existing /usr/sbin/powered with this version: https://garage.maemo.org/frs/download.php/3369/powered