How can I debug this memory usage / dom usage increase in my JS/Update panel site

Answer 1

I can tell you first hand Microsoft knows about the IE problem(KB 2000262) with UpdatePanels. Its a DOM parser issue. I had a site that ran fine up until a certain page content size and then IE(all versions) had a fit. FF and other browsers handled the same pages with ease.

Things I did to make my pages faster:

• Use UpdateMode=Conditional wherever possible
• Implement the KB 2000262 fix

UpdatePanel Async Postsback slow in IE…Part 3