Not Accepting text > 1200 characters in IE

Although I can enter more than 1200 characters into the text box, once I exceed this character count the submit button ceases to send the form (nothing happens when I click it). I'm using 2.2 Basic Features within a PHP page on IE 6.0 (also found the same problem with 2.0). This problem didn't happen using firefox.

I saw some other posts about similar issues but no solutions or suggestions.

Anyone else having this issue or figured a way around it?

Here's the code on the page

<td colspan="2" align="left" valign="middle">

<?php   $bio=stripslashes($bio);
$oFCKeditor = new FCKeditor('bio') ;
$oFCKeditor->BasePath = $path.'FCKeditor/';
$oFCKeditor->ToolbarSet = 'Basic' ;
$oFCKeditor->Value =$bio;
$oFCKeditor->Width  = '500' ;
$oFCKeditor->Height = '200' ;
$oFCKeditor->Create() ;
echo $error[your_bio]; //Error display if field is empty ?></td>