I got an identical backtrace, but my search field was/is not empty. I typed msvcrt and then [ENTER]. It happens when I press [ENTER] after typing a search string, but it won't happen if I just type e.g opera and wait for the automatic list to show up (Actions, History etc.) I'm on Dapper beta.
-- Non-fatal error when entering an empty string https://launchpad.net/bugs/41293 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
