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Thread: Requires installation of untrusted packages

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hoping can lead me documentation or explain how handle situation where:

ubuntu software center produces warning, "requires installation of untrusted packages". guides i've read don't explain preferred way of importing key or in ubuntu register ensure i'm downloading trusted packages. instead of going synaptic pm , adding package (if isn't way)?

sorry naive question.

specific download in question is:
=====================================
qt 4 designer

message is:
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requires installation of untrusted packages
action require installation of packages not authenticated sources.
details:
fontconfig-config libfontconfig1 libfontconfig1-dev

where downloading packages from? installed qt$ designer yesterday using synaptic, , never got messages untrusted packages. i'm running karmic , use main servers.


Forum The Ubuntu Forum Community Ubuntu Official Flavours Support New to Ubuntu [ubuntu] Requires installation of untrusted packages


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