guys, I think the huge size is due to the dependencies, the library this app is using qtsysteminfo is based on the new QT Mobility API Technology Preview 2, it depends on a lot of other qt libraries like libqt4-maemo5-core, libqt4-maemo5-dbus etc.
Im sure you would have seen this getting installed.

You will be needing all this in your N900 sooner or later to be able to have QT applications so I dont see it as an issue. Feel free to correct me QT gurus.

The app as such is only 16K. the memory footprint is negligible too.

hope ive answered the questions around the 8MB download.
can clarify more if needed, PM me.

cheers


EDIT:

the additional dependent libs are installed in
/opt/qt4-maemo5 ( QT4.6 stuff which is unlikely to exist on your N900 if you havent installed any QT apps that depend on them )
and ive configured qtsysteminfo libs to install in /usr/lib