I recently installed the Ubuntu Remix on my netbook. The most annoying feature i found was the 'Maximus'. It maximizes every window you open, even small windows which should not be maximized. This is how you can disable this feature. Press Alt + F2 , enter gconf-editor , Go to -> /apps/maximus/no_maximize and set it to " true " (i.e check the check-box). So, if you want the restore, close buttons on the maximized windows then uncheck 'undecorate' .
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