vSphere (ESX4) and Citrix Provisioning Services

While testing Citrix Provisioning Services on vSphere I noticed a couple of interesting things :

1. Thin Provisioned streamed targets seem pretty neat. 😉 Originally a couple of kb, Used Space jumped to the 3GB pretty quickly after streaming began.
2. After upgrading the Virtual Hardware on the target VMs to Version 7, the streaming process broke.  Blue Screen Of Death followed up by a reboot.
   Had to roll back recreate Version 4 target VMs until I upgrade the vDisk.
3. To push out Version 4 Virtual Machines in a vSphere environment, be sure to choose CUSTOM during the New Machine Wizard.