Gday All,
SAP, sorry to hear you didn't get it to work, but we have had the opposite experience.
Running both DSS Lite and DSS Full (from demo CD), we get zero problems with PSOD's related to DSS. (Different story with Adaptec 3805 cards )

However, it looks like you are also booting the ESX from iSCSI?
If so, even the smallest network error will bring you unstuck....

Piwi, did you switch to FileIO? Did that help?
What was the full PSOD error?

Rgds Ben.