Problems with modal dialog and aspx undesired postbacks / page load on close

Problems with modal dialog and aspx undesired postbacks / page load on close

Hi all,

I'm having strange behaviours using jqueryui modal dialogs.
I have a parent page that opens up popup, inside the popups, i load another page (the popups is an iframe).
The popup page is a webform page.

All works great, but when popup closes, either with 'X' or calling the .close() function, i have an undesired postback on the page. In addition to this, only on firefox, i have another page_load event,  the same event as page loads the first time.

This causes strange and uncontrolled problems around the application...

Do someone experienced problem like this?