[SOGo] Improper installation: No language locale found

[Masood]

After upgrading the Ubuntu server version from 10.4 to 12.4, I am continuously
receiving this alarm message in my inbox every one second!
"sogo-ealarms-notify[7976] File NSUserDefaults.m: 685. In +[NSUserDefaults
standardUserDefaults] Improper installation: No language locale found"
Could you please tell me what's the problem and how can I get rid of these
thousands of emails everyday in my inbox?!
-- 
users@sogo.nu
https://inverse.ca/sogo/lists