http://blogs.msdn.com/mikeormond/archive/2007/02/01/on-updatepanel-performance.aspxPhil Winstanley (Plip) tried to leave the following comment relating to my blog post about UpdatePanel performance but found that you had to login to leave comments so he mailed it to me instead. I wasn't aware you had to login to leave comments (shameen-GBCommunityServer 2.1 SP1 (Build: 61025.2)