Question : Tracing the requests

For some reason our website at http://ekip.azbuz.com crashes internet explorer.

It doesn't happen always. You can probably experience it if you refresh it 5-6 times.

I would like to trace all the movement on my network card so that I can see what happens just before the crash.

Which software would you suggest?

Answer : Tracing the requests

Wireshark (formerly ethereal) is pretty much the defacto standard for network analysis software.  And it's Open-Source/Free.  In its default configuration it will capture all traffic sent on all of your network cards.  But you can setup filters and even download plugins for it that will display particular data for specific protocols in more friendly ways.

http://en.wikipedia.org/wiki/Wireshark
http://www.wireshark.org/