Linux Find removal error message

When Linux is looking, access to some directories may not be accessible and many error messages are printed

1. root directory file contents

-bash-3.2$ ls
Anaconda-ks.cfg Bea Desktop Lib Wls1036_generic.jar

2. Find the file ending with. Log,

-bash-3.2$ find. -name "*.log"
Find:/.gconfd:? ƒé™?? ? ¤ÿ
Find:/.gnome2:? ƒé™?? ? ¤ÿ
Find:/.gnome2_private:? ƒé™?? ? ¤ÿ
Find:./. Trash: ƒé™?? ? ¤ÿ
Find:/.java:? ƒé™?? ? ¤ÿ
Find:/.tuscany:? ƒé™?? ? ¤ÿ
Find:/.eggcups:? ƒé™?? ? ¤ÿ
Find:/.chewing:? ƒé™?? ? ¤ÿ
Find:/.mozilla/firefox:? ƒé™?? ? ¤ÿ
Find:/.scim:? ƒé™?? ? ¤ÿ
Find:/.metacity:? ƒé™?? ? ¤ÿ
Find:/.gconf:? ƒé™?? ? ¤ÿ
Find:/.nautilus/metafiles:? ƒé™?? ? ¤ÿ

At this time the system language use Chinese instead of a problem, very strange
-bash-3.2$ Echo $LANG
Zh_cn. UTF-8

Temporary change to English

-bash-3.2$ export lang= "en_US. UTF-8 "
-bash-3.2$ Echo $LANG
en_US. UTF-8

And then find
-bash-3.2$ find. -name "*.log"
Find:./.gconfd:permission denied
Find:./.gnome2:permission denied
Find:./.gnome2_private:permission denied
Find:./. Trash:permission denied
Find:./.java:permission denied
Find:./.tuscany:permission denied
Find:./.eggcups:permission denied
Find:./.chewing:permission denied
Find:./.mozilla/firefox:permission denied
Find:./.scim:permission denied
Find:./.metacity:permission denied
Find:./.gconf:permission denied
Find:./.nautilus/metafiles:permission denied

3, the error output to the/dev/null device, the error message disappears
-bash-3.2$ find. -name "*.log" 2>/dev/null
-bash-3.2$ find. -name "*.cfg" 2>/dev/null
./anaconda-ks.cfg