We have 16GB Memory, and are running windows 2008 (not r2), and found that installing the Windows patch mentioned in the SN. This resolved our issue of the SAS process consuming all the memory and making the machine unresponsive - we didn't look at the utilisation etc. We have also set the environment var as stated in the SN (and SAS TS) but this was to resolve a periodic I/O error (which it didn't).
Interesting the SN says "Earlier versions of this SAS note suggested a Microsoft hot fix. However, additional testing showed that the Microsoft hot fix had little impact."
Barry