It's me again.
I downloaded Polish language pack from http://translations.elkarte.net.
According to transifex page file Who.polish.php is complete in 99%, there is only missing one translated key, but file from package is very different. There are many more untranslated strings than n Transifex.
ah, sorry.. I think the tx pull cron (fetching updated files from transifex) might be the issue.. I'll check the Server logs later this day..
Hopefully it's fixed now :)
seems to be ok now :)
The discussion about missing strings has been moved to http://www.elkarte.net/community/index.php?topic=1506.0.