addlocale 3.7-10 coming to your repo soon, changelog:
- extended Internet connection timeout to 20 secs
- corrected Czech addlocale interface translation setup
- added more translations for addlocale desktop file (now at 21 languages, please learn English...
PS: there is no need to rerun addlocale if you already localized your system, not even on a Czech system, just update addlocale and you are fine.