Hi I have had the same problem and deleted the offending programs. I have also got a repositories problem see print out below.
I am still a newbe so be easy with me
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 intrepid Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 778978B00F7992B0
W: A error occurred during the signature verification. The repository is not updated and the previous index files will be used.GPG error: http://wine.budgetdedicated.com intrepid Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 58403026387EE263
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 intrepid Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 60D11217247D1CFF
W: GPG error: http://ppa.launchpad.net jaunty Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 632D16BB0C713DA6
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 intrepid Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 43C0AFF0D7FAE680
W: Failed to fetch http://ppa.launchpad.net/project-neon/u ... id/Release
W: Failed to fetch http://ppa.launchpad.net/openoffice-pkg ... id/Release
W: Failed to fetch http://wine.budgetdedicated.com/apt/dis ... id/Release
W: Failed to fetch http://ppa.launchpad.net/team-xbmc-intr ... id/Release
W: Failed to fetch http://ppa.launchpad.net/googlegadgets/ ... ackages.gz 404 Not Found
W: Some index files failed to download, they have been ignored, or old ones used instead.
any help will be appreciated
Brian