I just noticed that after I migrated my project Load event started firing twice and even code in if(!IsPostBack) fires twice.
It seems to be that the reason is that asp.net 2.0 adds Page_Load automatically for Load event and since in 1.1 version there was line like:
this.Load+=new EventHandler(thi.Page_Load);
it is added second time.
For some reason in my case this line wasn't removed by "Convert to Web Application" command.
Just wanted to make sure that I have to do it myself and that this know bug.
Thank you,
Shimon.