We develop applications with user interface (GUI) in browsers (html - telerik).We need to test these application with several users accessing it at the same time to look for concurrency issues. I suggest enabling the testlist scheduler to be able to run several tetslist at the same time (different threads) - if we try this now the testslist run 1 after the other. The suggested scheme I found on the forum of using a several machines to do this seems uneccessarely cumbersome: On 1 machine we would have to run a VMPlayer (with full a OS (Win7) and a runtime license (?)) for each list. Also in this contect re-using the same tests with different parameters would be helpful (data-driven is hooked up to each test so this does not solve being able to use the same test with different logon credentials). Seems to me that such a feature while making TestStudio a significantly better product also would be relatively easy to implement..... Best Regards Gunnar Skogen Senior Developer SafeEcom AS