Client Script mixing with Server Script

Just read an article from news.com.om on Jo-San.IT homepage (yeah, the first block located on the right pane) with title "Microsoft gets hip to AJAX". AJAX - well, nothing new to me as I developed and tried different types of similar "techniques" since ASP.NET v1.0 Beta 2 (Yes, I used client side scripting and mixed with server side code from the beta stage to the Whidbey age nowadays, dirty? huh? but it provide a pretty nice "interactive" interface and all users like it ;)

As a IT Pro point of view, using any kinds of technologies or terms are no big deal, but what I want to say here is the "script file(s)" and configuration of the Web server. I had an experience that client function doesn't work in I.E. after installing the .NET Framework v1.1 SP1. Yes, it's a pretty famous "backward imcompatible issue" since the release of .NET Fx SP1, and admin may need to re-configurate the Web server, or replace the "latest" script file by the "old" one. (weird? but it works :)

Colt Kwong