running asp.ent locally

Dear Expert.

I am testing an ASP.NET 3.5 app.  I found there is a series of messy codes behind the root directory of my project when I run locally.  The url becomes like

http://localhost/Testing/(S(j1234545hcy42055nqt3garh))/logon.aspx

What is the messy codes inserted into the url?  Is this due to I added session variables?  I dont' think I saw this a few days ago, then it started to pop up.
Will this code appear when the project is deployed to web server?

Thanks.
ChuChu
SRO_TSGAsked:
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Gyanendra SinghArchitectCommented:
go to web config and check cookieless session settings .. i am sure it must be true .. set it to false .. and test
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Heathcliff74Commented:
That code in the url is the 'forms authentication ticket'. Usually the authentication ticket is stored in a cookie. But when cookies are turned off, the ticked is put in the url. This article explains the details: http://msdn.microsoft.com/en-us/library/aa480476.aspx
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