Updating packages did not fix the bug. Upon the first `apt-get upgrade` on this installation, the following packages were upgraded (just copied the "Get" lines since they include the precise package names with version numbers): Get:1 http://archive.ubuntu.com/ubuntu/ natty/main mount amd64 2.17.2-9.1ubuntu4 [133 kB] Get:2 http://archive.ubuntu.com/ubuntu/ natty/main util-linux amd64 2.17.2-9.1ubuntu4 [518 kB] Get:3 http://archive.ubuntu.com/ubuntu/ natty/main bsdutils amd64 1:2.17.2-9.1ubuntu4 [34.3 kB] Get:4 http://archive.ubuntu.com/ubuntu/ natty/main libgomp1 amd64 4.5.2-6ubuntu5 [25.4 kB] Get:5 http://archive.ubuntu.com/ubuntu/ natty/main gcc-4.5-base amd64 4.5.2-6ubuntu5 [14.2 kB] Get:6 http://archive.ubuntu.com/ubuntu/ natty/main libstdc++6 amd64 4.5.2-6ubuntu5 [326 kB] Get:7 http://archive.ubuntu.com/ubuntu/ natty/main cpp-4.5 amd64 4.5.2-6ubuntu5 [4,603 kB] Get:8 http://archive.ubuntu.com/ubuntu/ natty/main libstdc++6-4.5-dev amd64 4.5.2-6ubuntu5 [1,589 kB] Get:9 http://archive.ubuntu.com/ubuntu/ natty/main g++-4.5 amd64 4.5.2-6ubuntu5 [6,505 kB] Get:10 http://archive.ubuntu.com/ubuntu/ natty/main gcc-4.5 amd64 4.5.2-6ubuntu5 [7,203 kB] Get:11 http://archive.ubuntu.com/ubuntu/ natty/main libgcc1 amd64 1:4.5.2-6ubuntu5 [42.3 kB] Get:12 http://archive.ubuntu.com/ubuntu/ natty/main libuuid1 amd64 2.17.2-9.1ubuntu4 [13.0 kB] Get:13 http://archive.ubuntu.com/ubuntu/ natty/main libblkid1 amd64 2.17.2-9.1ubuntu4 [63.2 kB] Get:14 http://archive.ubuntu.com/ubuntu/ natty/main libselinux1 amd64 2.0.96-1ubuntu2 [64.6 kB] Get:15 http://archive.ubuntu.com/ubuntu/ natty/main libexpat1 amd64 2.0.1-7ubuntu3 [133 kB] Get:16 http://archive.ubuntu.com/ubuntu/ natty/main libsqlite3-0 amd64 3.7.4-2ubuntu5 [328 kB] Get:17 http://archive.ubuntu.com/ubuntu/ natty/main libpcre3 amd64 8.12-3ubuntu2 [150 kB] Get:18 http://archive.ubuntu.com/ubuntu/ natty/main python-apt-common amd64 0.7.100.2ubuntu1 [19.6 kB] Get:19 http://archive.ubuntu.com/ubuntu/ natty/main python-apt amd64 0.7.100.2ubuntu1 [294 kB] Get:20 http://archive.ubuntu.com/ubuntu/ natty/main uuid-runtime amd64 2.17.2-9.1ubuntu4 [15.7 kB] Get:21 http://archive.ubuntu.com/ubuntu/ natty/main app-install-data amd64 0.11.04.7 [6,907 kB] Get:22 http://archive.ubuntu.com/ubuntu/ natty/main checkbox-gtk amd64 0.11.2 [26.0 kB] Get:23 http://archive.ubuntu.com/ubuntu/ natty/main checkbox amd64 0.11.2 [1,268 kB] Get:24 http://archive.ubuntu.com/ubuntu/ natty/main firefox-globalmenu amd64 4.0~rc2+build3+nobinonly-0ubuntu1 [60.4 kB] Get:25 http://archive.ubuntu.com/ubuntu/ natty/main libasound2 amd64 1.0.24.1-0ubuntu3 [425 kB] Get:26 http://archive.ubuntu.com/ubuntu/ natty/main firefox amd64 4.0~rc2+build3+nobinonly-0ubuntu1 [16.2 MB] Get:27 http://archive.ubuntu.com/ubuntu/ natty/main firefox-gnome-support amd64 4.0~rc2+build3+nobinonly-0ubuntu1 [14.6 kB] Get:28 http://archive.ubuntu.com/ubuntu/ natty/main gir1.2-notify-0.7 amd64 0.7.1-0ubuntu3 [3,266 B] Get:29 http://archive.ubuntu.com/ubuntu/ natty/main libnotify4 amd64 0.7.1-0ubuntu3 [18.3 kB] Get:30 http://archive.ubuntu.com/ubuntu/ natty/main gnome-user-guide amd64 2.91.90+git20110306ubuntu1 [76.7 kB] Get:31 http://archive.ubuntu.com/ubuntu/ natty/main gstreamer0.10-plugins-good amd64 0.10.28-0ubuntu2 [1,693 kB] Get:32 http://archive.ubuntu.com/ubuntu/ natty/main gstreamer0.10-pulseaudio amd64 0.10.28-0ubuntu2 [88.1 kB] Get:33 http://archive.ubuntu.com/ubuntu/ natty/main libpcsclite1 amd64 1.7.0-2ubuntu1 [24.0 kB] Get:34 http://archive.ubuntu.com/ubuntu/ natty/main python-pkg-resources amd64 0.6.15-1ubuntu1 [63.0 kB] Get:35 http://archive.ubuntu.com/ubuntu/ natty/main ubuntuone-control-panel-gtk amd64 0.9.2-0ubuntu1 [91.7 kB] Get:36 http://archive.ubuntu.com/ubuntu/ natty/main ubuntuone-control-panel amd64 0.9.2-0ubuntu1 [2,072 B] Get:37 http://archive.ubuntu.com/ubuntu/ natty/main python-ubuntuone-control-panel amd64 0.9.2-0ubuntu1 [17.6 kB]