Stable distributions only make updates between minor releases, not between major releases.
This avoid the introduction of regressions in other places.
Nevertheless, gnome-nettool 3.0.1 was released in January and there is no update in Ubuntu.
You can file a bug for getting that package into 11.10.
However, gnome-nettool 3.0.1 does not include the fix for this particular bug because the
solution implies a change in the UI. Therefore it was included in gnome-nettool 3.1, which is
is a development version of the next gnome 3.2 (not released yet).
Stable distributions only make updates between minor releases, not between major releases.
This avoid the introduction of regressions in other places.
Nevertheless, gnome-nettool 3.0.1 was released in January and there is no update in Ubuntu.
You can file a bug for getting that package into 11.10.
However, gnome-nettool 3.0.1 does not include the fix for this particular bug because the
solution implies a change in the UI. Therefore it was included in gnome-nettool 3.1, which is
is a development version of the next gnome 3.2 (not released yet).