Strange Jetstress 2010 results..?

Are you running the latest version of Jetstress 2010 against data created using the beta?  If so then you may see some very strange results because there are some minor updates from the beta version which mean that you cannot mix databases created using the beta version with tests run using the released version.  Either stick to the beta or download the RTM version and recreate the databases from scratch.

Have a look on TechNet for more information about Jetstress 2010