I have found a solution here: https://bugs.archlinux.org/task/41951
Updating the virtualbox extensions to 4.3.18 solved the problem and my win7 guest works again. Old version of the extensions was 4.3.6 New version now matches the virtualbox version: 4.3.18 (get yours here: https://www.virtualbox.org/wiki/Downloads) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1386445 Title: virtualbox VM segfaults while starting To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/virtualbox/+bug/1386445/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
