R 2.1.0 GUI language

How do I set the language of the GUI? With R 2.1.0 it suddenly changed to 
German and I want it to stay English. I couldn't find any setting to change.

Which OS is this?  PLEASE do read the posting guide.

This *is* documented in the `R Installation and Adminstration' Manual, 
section `Internationalization'.

If your OS is set to German, then why don't you expect R to follow?
If you don't want German menus, do you want German months (as has happened 
for many versions).

For Windows or Linux, to just change the language of messages, set 
environment variable LANGUAGE=en.  To set all aspects, set LC_ALL=en.  I 
don't know about MacOS X menus.

Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595