Hi, this was a bad one; gcc-4.9-base from jessie breaks gcc-4.7-base from wheezy, so you had to update gcc-4.7-base to jessie/unstable for a stable/testing mix as soon as some package required gcc-4.9-base from testing. For now using gcc-4.7-base from unstable seems to work; wheezy/jessie mix is broken otherwise. regards, Stefan