Code:
>sudo portsnap fetch update
Password:
Looking up portsnap.hshh.org mirrors... 2 mirrors found.
Fetching snapshot tag from portsnap2.hshh.org... done.
Fetching snapshot metadata... done.
Updating from Tue Dec 27 15:35:40 CST 2011 to Tue Feb 21 09:34:34 CST 2012.
Fetching 4 metadata patches... done.
Applying metadata patches... done.
Fetching 4 metadata files... done.
Fetching 67 patches.....10....20....30....40....50....60... done.
Applying patches... done.
Fetching 45 new ports or files... gunzip: (stdin): unexpected end of file
snapshot is corrupt.
How can I fix such a problem?