DOT NET WEB Application Problem

[Vishwas]

Background:
We are having a web form with textbox and a dropdownlist. Both of them
are having autopostback enabled for textchanged and
selectedIndexChanged respectively. This aspx is being displayed in a
frame.

Problem:
When I enter the value in the textbox and then try to select anything
from the dropdownlist , the page gets blocked(blank page and no links
in the other frames work)until refresh is pressed. The strange thing
is that if the same page(aspx) is loaded independently (without a
frame), it works just fine.

Request:
Can anyone please tell me how to get the aspx working on the frameset
html.

Thanks
Vishwas