dir_autoload does't work if torrent file including CJR character

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I've been using utserver-25053 on my Archlinux(i386) for a few months, everything works ok. but I've found dir_autoload would not work anymore if torrent file including Chinese/Japanese/Krean character after a kernal or another packages update on someday. the sametime, the torrent name in dir_completed will be weird too, it's like this:

$ ls
12-16 ?????????7??.torrent

Be an old linux user, I know it will be something wrong with encoding of filename, some info of my OS below:

$ uname -rpm
3.1.5-1-ARCH i686 AMD Athlon(tm) II X3 445 Processor

 $ echo $LANG
en_US.UTF-8

$ locale -a
C
en_US.utf8
POSIX
zh_CN.utf8

finally, I can't figure out this after I do all test what I can do. Is it a bug in 25053?

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my temporary solution:

add a line to /usr/bin/utserver:

export LANG="en_US.UTF-8"