Here some additional information: Used etch for one year without bigger problems (only sporadic crashes) Since release I got regular crashes.
Found a workaround (will close bug if this works for more than a week) Set kontact_todopluginEnabled=false in .kde/share/config/kontactrc -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]