Several items in the menu were not translated to zh_CN.

Confirm this problem, here are some screenshots to clarify the problem. I've checked the untranslated strings are not in the template either on gnome's 2-30 branch or launchpad.

Can anyone check whether the same problem exist in other locales?

I can confirm this in Catalan. If the strings are not in the upstream template, it should be reported upstream and we can add a task to this bug to track the upstream one.

This happened because gcalctool was downgraded to 2.28, and the template is from 2.30. In theory, the template was uploaded before the freeze (I even tested it!), and it should be in the langpack... but this is just the theory :(. Currently, in Lucid the template has 267 stings, in Gnome 2.30 it has 269, in Gnome 2.28 452.

Then should we upload a template from 2.28 manually to Launchpad, so that the next update of language packs could probably fix this issue?

I just did that, let's hope that this is enough.

Much better now: https://translations.launchpad.net/ubuntu/lucid/+source/gcalctool/+pots/gcalctool

I'm not sure if this is related to this bug. The german translation of gcalctool (in lucid, 5.28.2) misses some menu strings, like "Edit", "Undo", "Redo" or "Insert ASCII value".

The launchpad translation page for gcalctool shows no missing strings.

An update for gnome-translations-de (or whatever these packages are called) was installed a few hours ago and the translation strings are still missing.

The problem still exists. Confirmed in zh_CN as well.

It has been quite some time since the bug was updated. Can someone see if the issue is still present (in Maverick preferably)?

The language pack in -updates fixes this for me, so we can close this now.