Strange strings in app-install-data

[Milo Casagrande]

Hi fellow translators,

while I was looking at the translation for app-install-data in Natty,
I found some odd strings in there.
For example string numbers like:
1846
1848
1849
1850

Does anybody have an idea if those strings are really supposed to be there?

Ciao.

-- 
Milo Casagrande <milo at casagrande.name>