Official Mumble VoIP Forums

Do you also see the effect when the overlay of mumble is disable? Are the games running at a different resolution then your desktop? Which version of mumble are you running? These question could help us tracking the problem. You could try to add firefox to the blacklist of the overlay. In the develo...
This is just a guess, but you could try to disable the plugins and/or overlay. These are the only two things that really interact with the games memory. If it helps, could you provide us which of the two systems is causing the problem.
For me this is a new issue.

You state that the effect only happens when running source engine based games. Probably one of the auto updates of steam is causing this problem. I do not have a solution at the moment. I have some source engine based games, so I can try to replicate the problem.
When you first add a new server to the list the password field will not show up. But when you connect for the first time to the server you will be asked to enter the server password. After this point when you edit the entry of the server in the server list there will be a password field. You can see...
The AGC is done on the input stream, so before the audio is send to the server. What I am trying to say is that it is probably not your fault, but due to the other people having setup mumble incorrectly. If you can figure out who is popping ask them to run the audio wizard and also ask them to read ...
I would say follow one of the links given in the table showing channel viewers. Every viewer probably needs there own way of setting it up, so no general method can be given.

Good luck.
It was a bit unclear to me what you mend by "mumble off". But that mumble crashes or exits when you connect to a server can have multiple reasons and is probably unrelated to the warning message of the certificate. Could you run the audio wizard to see if your audio device is running properly. But b...
This means that the certificate of the server is self-signed. Nothing to be scared off it is just a warning and probably very common warning when logging onto a new server. Most personal murmur servers are running with a self-signed certificate, because of the extra effort needed to get a StartCom c...
Try this wiki page.
Just to give you a small update. As far as I know Kissaki has been working on the DX11 implementation. But he has not been on it for a while. Just like me most of the devs of mumble do not have DX11 capabilities on there graphics-card, so we are of no help for the implementation. :( Lets hope more d...