ADF 11g - Very slow page rendering

Hi,
In our application we have a page with many panel boxes which are by default visible='false'. On the selection of a row in the table the particular panel box would be rendered and shown on the page.
The problem we are facing is with a very simple transaction, the user selects a particular type and there is a simple button which submits the records selected to data base and shows a popup. This process is taking very long. While debugging we have observed that the submission is happening fast but the displaying of the pop up and the page is time taking.
When we removed all the code from the page and just left the code for the above transaction and did the testing there was no delay. The complete flow went very fast.
We are using Fire fox 3 as our default browser.
Can any one please help us in improving the performance of the page?
Thanks,
Manasa.

Hi,
We have solved the performance issue by tuning all the VOs being used in the Page. One more factor which increased the performance was clearing the multiple iterators that got created in the pageDef during the course of development.
Hope this helps you.
Thanks,
Manasa.

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