Thanks rstens and RSBarber for answering my question about switching server. I just want to remind those who is testing ASP.net, besides host name, you need to get correct ViewState.
Re: Switch Server
You are welcome.
Yes Viewstate is very important and there a few people out there who are struggling with this.
If you have some time could you tell us how you managed working with viewstate. And pls. post your answer in the PerformanceStudio forum