problems with a netscape post

Hi, I am trying to post some form data to a php page that then updates a mysql database and echos back to the browser that the data has been inputted. Here is the general form of my post;- <form action="blah.php3" method="post"> .. form widgets here ..... <input type="submit" value="blahblah"> </form> this works perfectly with IE and opera, but with netscape 4.* it either takes ages for the event to transpire or times out. I am not trying to post any files ect, just text field data, 1k max, anyone have any ideas what is going wrong? thanks