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Problem Updating Network Manager Checking GPG signatures... ############################## [100%] E: Unknown signature /var/cache/apt/archives/NetworkManager-glib-devel-0.7.0.99-3.fc10.x86_64.rpm: (SHA1) DSA sha1 md5 (GPG) NOT OK (MISSING KEYS:GPG#4ebfc273) E: Unknown signature /var/cache/apt/archives/NetworkManager-devel-0.7.0.99-3.fc10.x86_64.rpm: (SHA1) DSA sha1 md5 (GPG) NOT OK (MISSING KEYS:GPG#4ebfc273) E: Unknown signature /var/cache/apt/archives/NetworkManager-gnome-0.7.0.99-3.fc10.x86_64.rpm: (SHA1) DSA sha1 md5 (GPG) NOT OK (MISSING KEYS:GPG#4ebfc273) E: Unknown signature /var/cache/apt/archives/NetworkManager-0.7.0.99-3.fc10.x86_64.rpm: (SHA1) DSA sha1 md5 (GPG) NOT OK (MISSING KEYS:GPG#4ebfc273) E: Unknown signature /var/cache/apt/archives/NetworkManager-glib-0.7.0.99-3.fc10.x86_64.rpm: (SHA1) DSA sha1 md5 (GPG) NOT OK (MISSING KEYS:GPG#4ebfc273) E: Error(s) while checking package signatures: Failed to fetch http://download.fedora.redhat.com/pub//fedora/linux/updates/10/i386//./NetworkManager-gnome-0.7.0.99-3.fc10.i386.rpm MD5Sum mismatch Failed to fetch http://download.fedora.redhat.com/pub//fedora/linux/updates/10/i386//./NetworkManager-0.7.0.99-3.fc10.i386.rpm MD5Sum mismatch Failed to fetch http://download.fedora.redhat.com/pub//fedora/linux/updates/10/i386//./NetworkManager-glib-0.7.0.99-3.fc10.i386.rpm MD5Sum mismatch E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?
Same here ... $ sudo yum update warning: rpmts_HdrFromFdno: Header V3 DSA signature: NOKEY, key ID 4ebfc273 Public key for NetworkManager-0.7.0.99-3.fc10.i386.rpm is not installed
https://www.redhat.com/archives/fedora-announce-list/2009-March/msg00004.html *** This bug has been marked as a duplicate of bug 489524 ***