title: ln[*] in Jupyter notebooks when using the %%bash magic
body: <p>I'm working in Jupyter notebooks, when I use the %%bash magic I get the ln[*] (which means the kernel is busy) instead of the ln[number]. The kernel seems to stay busy until I restart it, and it always does this when using %%bash. </p>
  
  <p>It was working fine until last week, when we were moved to Windows 10 pro with a new AVG antivirus - could this be it? </p>
  
  <p>Any help would be great!</p>