The feedback window shown to the user lacks translation support, so there's some strings such as "Initializing session.." that are not translated. This is a breach against our holy translation policy - all things the user sees should be translated.
To clarify, tl-run-xstartup-feedback itself is translated, but the steps it executes are not.
We get those strings from the scripts themselves (from comments), so we need to extend that format in order to solve this. These are not hard coded strings in one of our programs.