Hi,  I had the exact same issues on multiple pc's in my home. Some were wireless and others were wired only. all machines are running x64 win8 pro, not home.   I noticed that when I ran win7 in a vm on the same machine the issue didnt occur so I went hunting for a cause.   I eventually tracked it down to my canon printer/scanner network driver. simply disabling the network printer service didnt work, I had to completely uninstall. The issue seemed to most occur when 'network ij' software was running. this is the scanning software that listens for the scanner sending images back to the pc.   I would be happy to provide the offending driver to juniper if requested.   a.  ... View more