First request is very slow after website sits idle with Asp.net mvc IIS6

Question

I have a project in asp.net mvc, my hosting is using IIS6, and the first request after the website sit's idle is very slow. I looked at, http://forums.asp.net/t/1418959.aspx and asked the hosting for this settings. They say that the actual settings are:

"The pool is set with Idle Timeout disabled, Rapid-fail enabled and with a single worker process."

But still slow at the first request. Do you have any other clues?

Thanks in advance,

Alfredo