I don't think I can help you with network problems but maybe at least with Beryl.
make sure in the beryl manager you choose Window Manager>Beryl and Window Decorator>Emerald. Then check your /etc/x11/xorg.conf. I once had some issues with Beryl and adding this:
Option "AddARGBGLXVisuals" "True"
fixed it (you can read about it on http://ubuntuguide.org/wiki/Ubuntu:Feis ... 8Nvidia.29
- I assumed you have nvidia gpu, if you don't there are guides for ATI there as well). I also noticed to my surprise that it doesn't matter if you add the line to Section "Device" or "Screen". At least on my system.
I hoped it helped you some.