[vetinari]

My first though was, that there must be something wrong with the cables, and occasionally a packet is damaged. And at the end of the article, there it goes, powerline.

If you are using unreliable connection, use something that can verify the transfer, rsync, for example.

[MonaroVXR]

Not sure if that's the issue

[vetinari]

Either that, or bad RAM, and the copy buffer hit it.

In the pictures, it seems too regular.