What are the 12 users each doing? What applications are they running? Also, what else is running on the host - and what is the configuration of the host (two CPUs and 16GB, but what kind of CPUs, how many cores, what kind of disk subsystem, etc.)?
Ken Cline
Technical Director, Virtualization
Wells Landers
VMware Communities User Moderator
Ken Cline
VMware vExpert 2009
VMware Communities User Moderator
Blogging at: http://KensVirtualReality.wordpress.com/