Every now and then, on a few computers both Windows 7 and 8, we loose keyboard input on our own computer either during or after a remoting into a another computer. Seems like a problem with a keyboard redirect process. We do not loose mouse control.
I've found killing the LMIBroker.exe process in Task Manager gets us back keyboard control.
I suspect the issue *may* relate to intermittent (and not proven) Internet connectivity issues. Everything seemed ok with the Internet at the time so it's only a suspicion that LMI doesn't handle some situations gracefully.
I've not had the issue in a while now.
I'm honestly not sure, but I'll keep track of it from this point onwards.
It's definitely possible that it's just the one host, I most recently observed it on our largest client's main server.