[yocto] task 240 of 4900 and task 1526 of 4900 failed When I followed "The Yocto Project Quick Start"

[fungjack]

Hello all!
When I followed "The Yocto Project Quick Start" and ran bitbake -k core-image-sato, two tasks(240 and 1526) failed. My host is Ubuntu 10.04. Who can give me some advices? Thanks!

NOTE: Running task 240 of 4900 (ID: 586, /home/jack/work/poky-denzil-7.0/meta/recipes-devtools/perl/perl-native_5.14.2.bb, do_unpack)
NOTE: Running task 1526 of 4900 (ID: 874, /home/jack/work/poky-denzil-7.0/meta/recipes-devtools/perl/perl_5.14.2.bb, do_unpack)
NOTE: package perl-5.14.2-r6: task do_unpack: Started
NOTE: package perl-native-5.14.2-r0: task do_unpack: Started
ERROR: Function failed: Unpack failure for URL: 'http://www.cpan.org/src/5.0/perl-5.14.2.tar.gz'. Unpack command PATH="/home/jack/work/poky-denzil-7.0-build/tmp/sysroots/i686-linux/usr/bin/core2-linux:/home/jack/work/poky-denzil-7.0-build/tmp/sysroots/i686-linux/usr/bin:/home/jack/work/poky-denzil-7.0-build/tmp/sysroots/i686-linux/usr/sbin:/home/jack/work/poky-denzil-7.0-build/tmp/sysroots/i686-linux/usr/bin:/home/jack/work/poky-denzil-7.0-build/tmp/sysroots/i686-linux/sbin:/home/jack/work/poky-denzil-7.0-build/tmp/sysroots/i686-linux//bin:/home/jack/work/poky-denzil-7.0/scripts/native-intercept:/home/jack/work/poky-denzil-7.0/scripts:/home/jack/work/poky-denzil-7.0/bitbake/bin/:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/home/jack/work/poky-denzil-7.0/scripts" tar xz --no-same-owner -f /home/jack/work/poky-denzil-7.0-build/downloads/perl-5.14.2.tar.gz failed with return value 2
ERROR: Logfile of failure stored in: /home/jack/work/poky-denzil-7.0-build/tmp/work/i686-linux/perl-native-5.14.2-r0/temp/log.do_unpack.15111
Log data follows:
| NOTE: Unpacking /home/jack/work/poky-denzil-7.0-build/downloads/perl-5.14.2.tar.gz to /home/jack/work/poky-denzil-7.0-build/tmp/work/i686-linux/perl-native-5.14.2-r0/
| 
| gzip: stdin: invalid compressed data--crc error
| tar: Child returned status 1
| tar: Error is not recoverable: exiting now
| ERROR: Function failed: Unpack failure for URL: 'http://www.cpan.org/src/5.0/perl-5.14.2.tar.gz'. Unpack command PATH="/home/jack/work/poky-denzil-7.0-build/tmp/sysroots/i686-linux/usr/bin/core2-linux:/home/jack/work/poky-denzil-7.0-build/tmp/sysroots/i686-linux/usr/bin:/home/jack/work/poky-denzil-7.0-build/tmp/sysroots/i686-linux/usr/sbin:/home/jack/work/poky-denzil-7.0-build/tmp/sysroots/i686-linux/usr/bin:/home/jack/work/poky-denzil-7.0-build/tmp/sysroots/i686-linux/sbin:/home/jack/work/poky-denzil-7.0-build/tmp/sysroots/i686-linux//bin:/home/jack/work/poky-denzil-7.0/scripts/native-intercept:/home/jack/work/poky-denzil-7.0/scripts:/home/jack/work/poky-denzil-7.0/bitbake/bin/:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/home/jack/work/poky-denzil-7.0/scripts" tar xz --no-same-owner -f /home/jack/work/poky-denzil-7.0-build/downloads/perl-5.14.2.tar.gz failed with return value 2
NOTE: package perl-native-5.14.2-r0: task do_unpack: Failed
ERROR: Task 586 (/home/jack/work/poky-denzil-7.0/meta/recipes-devtools/perl/perl-native_5.14.2.bb, do_unpack) failed with exit code '1'
ERROR: Function failed: Unpack failure for URL: 'http://www.cpan.org/src/5.0/perl-5.14.2.tar.gz'. Unpack command PATH="/home/jack/work/poky-denzil-7.0-build/tmp/sysroots/i686-linux/usr/bin/perl-native:/home/jack/work/poky-denzil-7.0-build/tmp/sysroots/i686-linux/usr/bin/core2-poky-linux:/home/jack/work/poky-denzil-7.0-build/tmp/sysroots/atom-pc/usr/bin/crossscripts:/home/jack/work/poky-denzil-7.0-build/tmp/sysroots/i686-linux/usr/sbin:/home/jack/work/poky-denzil-7.0-build/tmp/sysroots/i686-linux/usr/bin:/home/jack/work/poky-denzil-7.0-build/tmp/sysroots/i686-linux/sbin:/home/jack/work/poky-denzil-7.0-build/tmp/sysroots/i686-linux//bin:/home/jack/work/poky-denzil-7.0/scripts:/home/jack/work/poky-denzil-7.0/bitbake/bin/:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/home/jack/work/poky-denzil-7.0/scripts" tar xz --no-same-owner -f /home/jack/work/poky-denzil-7.0-build/downloads/perl-5.14.2.tar.gz failed with return value 2
ERROR: Logfile of failure stored in: /home/jack/work/poky-denzil-7.0-build/tmp/work/core2-poky-linux/perl-5.14.2-r6/temp/log.do_unpack.15114
Log data follows:
| NOTE: Unpacking /home/jack/work/poky-denzil-7.0-build/downloads/perl-5.14.2.tar.gz to /home/jack/work/poky-denzil-7.0-build/tmp/work/core2-poky-linux/perl-5.14.2-r6/
| 
| gzip: stdin: invalid compressed data--crc error
| tar: Child returned status 1
| tar: Error is not recoverable: exiting now
| ERROR: Function failed: Unpack failure for URL: 'http://www.cpan.org/src/5.0/perl-5.14.2.tar.gz'. Unpack command PATH="/home/jack/work/poky-denzil-7.0-build/tmp/sysroots/i686-linux/usr/bin/perl-native:/home/jack/work/poky-denzil-7.0-build/tmp/sysroots/i686-linux/usr/bin/core2-poky-linux:/home/jack/work/poky-denzil-7.0-build/tmp/sysroots/atom-pc/usr/bin/crossscripts:/home/jack/work/poky-denzil-7.0-build/tmp/sysroots/i686-linux/usr/sbin:/home/jack/work/poky-denzil-7.0-build/tmp/sysroots/i686-linux/usr/bin:/home/jack/work/poky-denzil-7.0-build/tmp/sysroots/i686-linux/sbin:/home/jack/work/poky-denzil-7.0-build/tmp/sysroots/i686-linux//bin:/home/jack/work/poky-denzil-7.0/scripts:/home/jack/work/poky-denzil-7.0/bitbake/bin/:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/home/jack/work/poky-denzil-7.0/scripts" tar xz --no-same-owner -f /home/jack/work/poky-denzil-7.0-build/downloads/perl-5.14.2.tar.gz failed with return value 2
NOTE: package perl-5.14.2-r6: task do_unpack: Failed
ERROR: Task 874 (/home/jack/work/poky-denzil-7.0/meta/recipes-devtools/perl/perl_5.14.2.bb, do_unpack) failed with exit code '1'
NOTE: Tasks Summary: Attempted 3307 tasks of which 3305 didn't need to be rerun and 2 failed.

Summary: 2 tasks failed:
  /home/jack/work/poky-denzil-7.0/meta/recipes-devtools/perl/perl-native_5.14.2.bb, do_unpack
  /home/jack/work/poky-denzil-7.0/meta/recipes-devtools/perl/perl_5.14.2.bb, do_unpack
Summary: There was 1 WARNING message shown.
Summary: There were 2 ERROR messages shown, returning a non-zero exit code.



 		 	   		  
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