Well it turns out that a VM on another PC in the same network doesn't have this problem. So it must be something wrong with my VirtualBox (seems unlikely) or Windows installation. Unfortunately I don't even know where to start looking. I'll have to ask on a Windows forum or something I suppose.RoyG wrote:I'm going to have my IT staff set up another Windows PC host with VirtualBox and an Ubuntu VM, and see what happens on that machine too.
Thanks again for all your help.