Evolution 标题乱码

Hi all,

我的系统：Debian Squeeze amd64,是从Lenny Upgrade过来的。

Upgrade前Evolution都好好的，Upgrade后，收邮件标题就乱码了，Evolution 版本：2.30.3,如我用gmail(webmail)发邮件给自己：

标题变为：
TEST???Ԝyԇ

正文变为：
TEST测试y

如果把编码改为GB18030后，正文正常了，但标题还是有问题。

我的locale:

#locale
LANG=zh_TW.UTF-8
LC_CTYPE="zh_TW.UTF-8"
LC_NUMERIC="zh_TW.UTF-8"
LC_TIME="zh_TW.UTF-8"
LC_COLLATE="zh_TW.UTF-8"
LC_MONETARY="zh_TW.UTF-8"
LC_MESSAGES="zh_TW.UTF-8"
LC_PAPER="zh_TW.UTF-8"
LC_NAME="zh_TW.UTF-8"
LC_ADDRESS="zh_TW.UTF-8"
LC_TELEPHONE="zh_TW.UTF-8"
LC_MEASUREMENT="zh_TW.UTF-8"
LC_IDENTIFICATION="zh_TW.UTF-8"
LC_ALL=

#locale -a

C
en_US
en_US.iso88591
en_US.iso885915
en_US.utf8
POSIX
zh_CN
zh_CN.gb18030
zh_CN.gb2312
zh_CN.gbk
zh_CN.utf8
zh_HK
zh_HK.big5hkscs
zh_HK.utf8
zh_TW
zh_TW.big5
zh_TW.euctw
zh_TW.utf8

该如何解决啊？谢谢！

补充一下，标题、正文内容均为：
TEST测试測試