> The new version is almost fine.  However, when I do
> 	tar xvfz some_archives.tgz
> command, I met the following errors:
> gzip: stdout: Broken pipe
> tar: Child returned status 1
> tar: Error exit delayed from previous errors

It looks as if gzip has some problem uncompressing your some_archive.tgz 
- try a "gzip -vt some_archive.tgz" to see if it's not broken (e.g. by 
downloading in type ASCII, network lossage, ...).


 - Hubert

--
Hubert Feyrer <hubert.feyrer@rz.uni-regensburg.de>