[nmglug] tar error

[js at jasonschaefer.com]

Hi

I am having a strange problem with tar. Everytime it begins to copy a
particular pdf it errors:

 ERROR: Files transfered partially or not at all.

This is the command:

 tar zcvf home.tar.gz --exclude sys/* /home

What could possibly be happening? The files transfer with cp, the
destination has plenty of space and their are no strange characters in
the file name...

Jason