Recently I discovered that when someone using SEPM tries to deploy clients with fillowing method "Web Link and E-mail" the client is overwritted by the last one created.
SEPM creates separate directory depending of the group but is not creating separate directory for each clients with different features/settings.
In ditails this subbject is discussed here:
https://www-secure.symantec.com/connect/forums/client-deployment-over-web-link-issue