Comment 1 for bug 1650771

Confirmed here as well. Not related to Solaar because I haven't used Solaar on this machine. When my Logitech Unifying receiver is plugged in to USB, the wingpanel freezes. Remove the receiver from USB and the panel snaps back to life. Plug in receiver and it's frozen again ;(

However I just discovered that if you click on the power indicator item in the wingpanel, it seems frozen for about 45 seconds, then it all magically starts working and the problem is gone.

Let me know what I can do to help fix this.