In order to design useful knowledge media spaces to knowledge workers it is essential that we understand the nature of the work conducted and the knowledge applied in real settings. This paper reports from a study of how a group of quality assurance specialists gather, structure and distribute information and knowledge. Based on the findings a number of overall requirements for knowledge mediaspaces are identified and discussed. The essential findingswere that information and knowledge are created and  handled in many different ways and have many differentforms. The core issues of our lessons learned so far are that we carefully need to consider knowledge media spaces both in terms of communication channels and knowledge archives. Knowledge media spaces should be seen as spaces in which knowledge and information is exchanged, filed,retrieved, presented and refined by actors having different vocabulary and perspectives on the knowledge. These characteristics must be taken into account when designing IT and multimedia based knowledge media spaces.