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I am using roundup 1.1.2 which has your patch applied
according to changelog. I've put en.po and en.mo files in
locale subdirectory of my tracker (en.po is just lt.po with
all strings translated and renamed to en.po). The web
interface is correctly translated, but I still get English
message in an email message when I add a comment:
Nerijus, SATi admin <xxx@xxx.lt> added the comment:

test