[PHP] sessions and data missing browser message

[Evelio Martinez]

Hi!

is there any relation between use of sessions (php 4.0.4) and  the
following browser message ?

Data Missing

This document resulted from a POST operation and has expired from the
cache. If you wish you can repost the form
data to recreate the document by pressing the reload button.

I am having this message since I include session handling in the code.

Is there any way to avoid this?

Thanks in advance

--
Evelio Martínez