This randomly happens to me. One indicator is that the Unity bar at the top will flash. If I then go to Nautilus, the app and icons have changed to a different theme. Screenshot attached.
** Attachment added: "Screenshot at 2011-10-25 14:54:38.png" https://bugs.launchpad.net/ubuntu/+source/nautilus/+bug/873545/+attachment/2572341/+files/Screenshot%20at%202011-10-25%2014%3A54%3A38.png -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to nautilus in Ubuntu. https://bugs.launchpad.net/bugs/873545 Title: After update Nautilus icons are black/white, no decorations of breadcrumb etc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nautilus/+bug/873545/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs