Simple bit of info, often hard to find:
ESX 3.5.0 Update 1 = Build 64607
ESX 3.5.0 Update 2 = Build 110268
ESX 3.5.0 Update 3 = Build 123630
ESX 3.5.0 Update 4 = Build 153875
ESX 3.5.0 Update 5 = Build 207095
ESX 3.5.0 June 2011 Rollup = Build 391406
An easy way to find build numbers without logging into the VI Client is to run:
vmware -v
See here for VMware ESX 4.0 Update to Build Number.
- Chris