I got the same "Upgrade Tool Crashed" too after I clicked to remove obsolete packages. Exactly same message. And I got this from a newly installed edgy that is immediately upgraded to feisty. (I botched my first attempt to upgrade.)
-- [MASTER] [kde] Upgrade tool crashed (edgy -> feisty) https://bugs.launchpad.net/bugs/107188 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs