Here I ask this question since 12.04 Beta 2 is usable and this question would come up sooner then later. After issuing the standard
sudo add-apt-repository ppa:matthaeus123/mrw-gimp-svn
sudo apt-get update
I get the following errors.
W: Failed to fetch http://ppa.launchpad.net/matthaeus123/mrw-gimp-svn/ubuntu/dists/precise/main/source/Sources 404 Not Found
W: Failed to fetch http://ppa.launchpad.net/matthaeus123/mrw-gimp-svn/ubuntu/dists/precise/main/binary-amd64/Packages 404 Not Found
W: Failed to fetch http://ppa.launchpad.net/matthaeus123/mrw-gimp-svn/ubuntu/dists/precise/main/binary-i386/Packages 404 Not Found
E: Some index files failed to download. They have been ignored, or old ones used instead.
Is there any way to get around this. Excluding compiling from source as it usually introduces even more multilevel errors.