We recently changed data centre. One of our sharepoint servers started to run slow. When we tried to logon it would take 60 seconds to display the page. It seemed to be down to a webpart with an RSS feed so I removed. Now when a user tries to logon they get a 60 second delay the first time and then it seems fine on subsequent attempts. Any ideas why the 60 second delay occurs at the start. I'm worried about adding it back into production, thanks.