title: MobaXterm: screen freezing
body: <p>I use MobaXterm to connect (via ssh) to an Ubuntu server as a Virtualbox guest and, to edit files I use Vim.
  So far so good but randomly I have a kind of freeze screen. Cursor is still blinking but it's impossible to do anything with it and, if I resize MobaXterm the session tab goes black.
  It's not due to a session loss as I set the guest server as host only adapter which rules out any session losses.</p>
  
  <p>So is it because of MobaXterm, Virtualbox or Vim ?
  Can someone help me on this ?</p>
  
  <p>Thanks</p>