Hi,

I made a little list of non-optified applications:
http://wiki.maemo.org/Opt_Problem/Non-Optified_packages

You can check the location of files from installed packages using:
dpkg -L <package>
or install the application Packageview (in extras-devel). Packageview also shows you the size which the application will use after it was installed.

If you find a non-optified application please fill a bug report. Most applications have their home in bugs.maemo.org.

Ciao jukey