I ran into this as well in 13.04 (Feb 27 daily build, fully updated/upgraded). I experienced it with Samba over Nautilus, as well as over rsync/ssh.
I experienced it with a 13.04 laptop over wireless pushing data to a server running Ubuntu Server 12.04.2. I also experienced it with a custom built 13.04 desktop pushing data to the same desktop.
I ran into this as well in 13.04 (Feb 27 daily build, fully updated/upgraded). I experienced it with Samba over Nautilus, as well as over rsync/ssh.
I experienced it with a 13.04 laptop over wireless pushing data to a server running Ubuntu Server 12.04.2. I also experienced it with a custom built 13.04 desktop pushing data to the same desktop.