Read a good overview article about the new VMware vSphere Web Client at vladan.fr - http://www.vladan.fr/vsphere-web-client-new-in-vmware-vsphere-5-1/ Looks like the WebClient is the way VMware is heading, stating that "the thick client won’t get further enhancements after the 5.1 release".
Links, commands and settings I someday probably won't find again