KMail issue?

Hi, Didn't I say that I've no issues with KMail? May be I've one. :-) When I click a mailto link in Konqueror or Kopete the New Message (KMail) window opens, but the e-mail address is not 'copied' into the To: field. Clicking a mailto link in Firefox fails with the following message in .xsession-errors: ** (firefox:1707): WARNING **: Could not launch default application for URI: Failed to execute child process "kmailservice" (No such file or directory). This happens on Fedora 16/17. Seen this too? Is it a KMail bug? Thanks, Martin Kho