why so many warnings in the process of updating my ubuntu

[chinadx]

I am now updating my ubuntu dapper to edgy,but some problems occur (right spelling?sorry,i have not install the Chinese input software,so can not type Chinese characters) in the process.
just like this:

Setting up python2.4 (2.4.4~c1-0ubuntu1) ...
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = "zh_CN:zh:en_US:en",
LC_ALL = (unset),
LANG = "zh_CN.UTF-8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").

I just don't know if this can cause any serious error to my system? anyone can help me .

[chinadx]

升级后无法进入xwindow，怎么回事？