Binary package hint: apport
As you can see in the screenshot attached, the notification bubble and the apport's dialog contains
strings that appears in English in my Spanish desktop. Some of these strings can't be translated because it isn't into the apport Rosetta's template:
https://launchpad.net/distros/ubuntu/edgy/+source/apport/+pots/apport/es/+translate
The strings are:
"Crash report detected"
"A application has crashed on your system (now or in the past). Click on the notification icon to display details."
And there's one string that is translated into Rosetta, and the translation is in the apport.mo file, but appears untranslated anyway:
"Sorry, %s closed unexpectedly."
This is the first string in the Rosetta's template, and is perfectly translated, and its translation is in apport.mo:
ricardo@yuggoth:~ $ strings -eS /usr/share/locale-langpack/es/LC_MESSAGES/apport.mo | grep unexpe
Sorry, %s closed unexpectedly.
Sorry, the program "%s" closed unexpectedly.
ricardo@yuggoth:~ $ strings -eS /usr/share/locale-langpack/es/LC_MESSAGES/apport.mo | grep Disculpe
Disculpe, %s se cerró inesperadamente.
Disculpe, el programa «%s» se cerró inesperadamente.
ricardo@yuggoth:~ $
The notification bubble is untranslatable.