New "Feature" with nightly builds

hello, there are 2 bugs since the last 1 or 2 releases of the nightly builds: Background gets black: It doesn't appears very often, but if it does i can't use even the right mousebutton on the desktop. A reliable Way to force this bug is (after a fresh login) to 1. start Heroes of Might & Magic III WoG ( a Wine - Appliction with switches the Resolution from 1920x1200 to 800x600 and back) you don't have to do anything in H III, you can just quit 2. start Emacs and quit 3. start vlc and quit. Usually you see here the first time the background gets black but this is only temporary. 4 start H III again and quit. 5 start vlc again and voila -> Background is black and remains until logout. and with the last nightly build my networksettings are gone - IP-Adress of the networkcard, - standard-gateway and - dns-server. Every time i boot or reboot, i have to set those data again. i hope someone can help on this bugs. Yours Werner