Apache+modssl+php problem??? possibly IE bug?

When in IE, submitting any form on our https page, the post variables intermittantly don't come through.The get variables come through fine.  Just not the $_POST variables.I have tried everything to get this to work. Everything was working fine but it seems after we updated IE with the last critical updates this started to become an issue.We have rebuilt servers, and installed apache+modssl+php from /usr/ports, as well as manually and have been unable to resolv this issue.We are using a generic installation of apache+modssl+php with the included php.ini, only modifications being Register_globals on and safe_mode offWe have also tried backing down to an earlier version of php and apache (php 4.3.1, modssl 2.8.15 and apache 1.3.28, which we were running before the rebuild)Netscape seems to work fine. Once again, this only seems to be happening on secure pages.We have tried on multiple workstations, and our customers seem to be effected by this too.Does anyone know what this might be? possibly an IE bug?Any help would be apreciated.Thanks! :)Chris Wilson