My tar can unpack that file just fine, I'd guess your download simply aborted prematurely.

In case you want some data for comparison: 

$ sha1sum perl-5.14.2.tar.gz
df1549d65cdef2b20023af83ecaa2a024109a5ad  perl-5.14.2.tar.gz
$ wc -c perl-5.14.2.tar.gz
15223598 perl-5.14.2.tar.gz

[download]
Perl 6 - second systems done right

In reply to Re: Corrupt Perl sources package? by moritz
in thread UPDATE Corrupt Perl sources package? by nando

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