a6vision - This bug has been mostly fixed in Precise - see above for a couple of related bugs which are probably best addressed in separate, new bug reports. As far as the LiveCD goes, you will have to wait for Ubuntu Ubuntu 12.04.1 which is scheduled for release on 23rd August 2012. Or you can use the Ubuntu 12.10 "Quantal Quetzal" alpha 2 LiveCD.
a6vision - This bug has been mostly fixed in Precise - see above for a couple of related bugs which are probably best addressed in separate, new bug reports. As far as the LiveCD goes, you will have to wait for Ubuntu Ubuntu 12.04.1 which is scheduled for release on 23rd August 2012. Or you can use the Ubuntu 12.10 "Quantal Quetzal" alpha 2 LiveCD.