>I added more events as recommanded. PreInit() does not get executed when it freezes. It does get executed before Page_Init() when it works. As for AddParsedSubObject(), this is not a recognized event. I do not know how to implement it. I will try with the next events.

Most of the items in that list were overrideable methods which Page calls whilst building. I'm not sure any of them will neccessarily tell us anything useful though. Maybe .AddedControl() which should be called everytime a control is added to the Page ?