[Bug 150875] New: KMail says it can "The signature is valid, but the key's validity is unknown." when that's not true

[Albert Astals Cid]

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http://bugs.kde.org/show_bug.cgi?id=150875         
           Summary: KMail says it can "The signature is valid, but the key's
                    validity is unknown." when that's not true
           Product: kmail
           Version: unspecified
          Platform: unspecified
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: NOR
         Component: general
        AssignedTo: kdepim-bugs kde org
        ReportedBy: tsdgeos terra es


Version:           1.9.6 (enterprise 0.20070907.709405) (using KDE 3.5.8, Kubuntu (gutsy) 4:3.5.8-0ubuntu1)
Compiler:          Target: x86_64-linux-gnu
OS:                Linux (x86_64) release 2.6.22-14-generic

A screenshot is worth more than one hundred words, i'm attaching it later. Basically kmail says "The signature is valid, but the key's validity is unknown." when i have full trust on the key.