portsnap update

Hi just doing a portsnap update, and i got an error:
sort: Broken Pipe
it seems to continue as it says its
Removing old files and directories....
i do hope it wont brake my ports tree.
Nothing major if your ports tree does break. Just remove the whole lot ( rm -rf /usr/ports) and refetch; portsnap fetch extract.

If there's one directory you can nuke without thinking about it it's /usr/ports ;)
And because it does not update with the method SVN? I remember the methods of updating portsnap update and freebsd-update was vulnerabilities to attacks on automatic.