I have one simple Pogoplug (POGOE02G) correctly installed and running in my apartment and when I try to  copy a document from my Pogoplug while I am at work, therefore not in my local network, I doesn't work. It always comes with some error, if it is a PDF it is unreadable, if it is a picture I get about 25% of the top of the picture, if it is a song I get only a couple of seconds of the begining. If I do the same test inside my local network everything looks fine. Is this a bug? Am I doing something wrong? Is this a limitation? Does anyone here have the same experience?

PS: my computer is running Linux and pogoplugfs is running without any error messages.