>Hi everybody,
>
>In our master page I see the following code
>
>When I was testing it I noticed that the Expiration time was set for ~30 minutes after I started my session. I'm guessing it's some default setting. How and where can I adjust it and what are the consequences of making this time bigger?
>

Form authentication timeout is 30 minutes by default. It's in the web.config. Session timeout is set separately (also in the web.config) - I think it's like 20 minutes by default.

Take a look at this post by Scott Guthrie (make sure you read the comments). It's pretty helpful.

http://weblogs.asp.net/scottgu/archive/2005/11/08/430011.aspx