This will happen alot in pre-releases it is not a bug. The newer package you need (libgtk 2.20.0-0ubuntu3) has simply not gotten to your mirror yet, or perhaps it is not even uploaded yet. It should go away in a day or two.
** Changed in: synaptic (Ubuntu) Status: New => Invalid -- Dependancies in Apt https://bugs.launchpad.net/bugs/553090 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs