I bought a SSL Cert which should work with iE 5+, but it doesn`t. All other browsers i tested work perfectly - no errors - just the site I want to display. But IE8 and small
I ran into a similar situation where the cert was working OK on all browsers except for IE (of course!). This is on Apache and the SSL cert had been issued by RapidSSL. Turned out in my case, that I had virtual host file default-ssl active, so somehow IE was picking up on that on the default self-signed cert instead of the rapidSSL cert referred to in my site virtual host.
Deactivated ssl-default, reloaded apache and that did it.