I am going to assume that you have never developed a ASP.Net application before.  ViewState is a .Net thing, not a DNN thing.  It is how ASP.Net tracks values from one postback to another.  For example, in a normal web application if you need to postback to the server and you want to preserve the data already entered into a form field (such as a textbox) you would have to handle that yourself (i.e. repopulate the textbox before sending the page back to the browser). In ASP.Net ViewState handles that for you.  It is a very nice feature so long as it is not abused.

BTW ViewState can be disabled when not required.

Just a suggestion, in the future before posting such a negative thread about a great OS product, you may want to get to know the technology it is written with first.  That generally clears up a lot of misunderstandings...

Best Regards,

Robert J Collins | Co-Founder & President

Netlogic Corporation