Quassel IRC

Hi,
no matter I explicitly instructs Quassel to use English language (see attached quassel0.png and quassel1.png images) some parts of the GUI are still in another language - spanish in this case.
I presume this may have to be with my system's locale settings and Quassel incorrectly setting it's own locales: while my system language is set to English (see attached systemsettings1.png image) my other system settings are set to Argentina (a spanish-speaking South America's country).
Also this is the content of my /etc/vconsole.conf file:
LOCALE=en_US.UTF-8
LANG=en_US.UTF-8
LANGUAGE=en_US.UTF-8
LC_CTYPE=en_US.UTF-8
LC_NUMERIC=es_AR.UTF-8
LC_TIME=es_AR.UTF-8
LC_COLLATE=en_US.UTF-8
LC_MONETARY=es_AR.UTF-8
LC_MESSAGES=C
LC_PAPER=en_US.UTF-8
LC_NAME=en_US.UTF-8
LC_ADDRESS=en_US.UTF-8
LC_TELEPHONE=en_US.UTF-8
LC_MEASUREMENT=en_US.UTF-8
LC_IDENTIFICATION=en_US.UTF-8

which as you see sets the language to english - although this is totally irrelevant since X applications won't use these settings.
Cheers.
-Martin