Comment 1 for bug 344806

I have the same problem on the Acer Aspire One EP1.5 but after trying your solution I end up with the following error.
W: A error occurred during the signature verification. The repository is not updated and the previous index files will be used.GPG error: http://gb.archive.ubuntu.com jaunty Release: The following signatures were invalid: BADSIG 40976EAF437D05B5 Ubuntu Archive Automatic Signing Key <email address hidden>

W: A error occurred during the signature verification. The repository is not updated and the previous index files will be used.GPG error: http://ppa.launchpad.net jaunty Release: The following signatures were invalid: BADSIG 60D11217247D1CFF Launchpad PPA for OpenOffice.org Scribblers

W: A error occurred during the signature verification. The repository is not updated and the previous index files will be used.GPG error: http://ppa.launchpad.net jaunty Release: The following signatures were invalid: BADSIG 3B22AB97AF1CDFA9 Launchpad PPA for Ubuntu-X

W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/dists/jaunty/Release

W: Failed to fetch http://ppa.launchpad.net/openoffice-pkgs/ppa/ubuntu/dists/jaunty/Release

W: Failed to fetch http://ppa.launchpad.net/ubuntu-x-swat/x-updates/ubuntu/dists/jaunty/Release

W: Some index files failed to download, they have been ignored, or old ones used instead.