Usually, a basic GNS3 installation is vpcs enabled, but binaries need to be downloaded. Should i add some reference in the main page?
Of course, please you can ! :) (please you delete the VPSC part after editing the wiki please)
GNS 2.0.3 has this known issue: the server won't stop once the gui is closed, a popup appears after a while asking if one would like to kill it. We could create a Know Issues category for this and any other notes.