MandrivaThis Forum is for the discussion of Mandriva (Mandrake) Linux.
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The reason why you get some packages as having invalid signatures is because they may not have been digitally signed using the Mandrake GPG key but because they are coming from official mandrake repositories it's usually fine to install them. Another thing when using RPMDrake or urpmi try not to upgrade too many packages at the same time, do it in small proportions coz I've noticed that sometimes if you try to update a large number of packages at the same time, not all of them are downloaded and you can end up with an error like the above.