Обсуждение на форуме тут: http://www.forum.nobat.ru/index.php?topic=6027.0
What´s new in 4.1.1.3 since 4.1.1.2:
[ - ] Fixed another serious UTF-7 encoding bug in IMAP folder names which might cause IMAP unusable under Windows configured for multibyte-character as a default language (e.g. Chinese).
What´s new in 4.1.1.2 since 4.1.1.1:
[ * ] BETA - addressing the issue of Message: X_CoderSelfTest in the exception log.