.htpasswd & IE9

[Megg81]

I have htaccess & htpasswd files protecting a directory. This works fine in IE8, Firefox & Chrome, but IE9 will not allow the user to login.
IE 9 allows creation of an account and the login information is written to .htpasswd. If the username and password created using IE9 are taken and entered while using IE8 then login is permitted. If the username and password are entered in IE9 then all that happens is that the popup login box is regenerated, cleared and reloaded over and over - but never permits login. Security settings have been changed to medium (same as IE8 which will login) but still not working.

Does anyone know a solution or a cause? Thanks.

...actually its a bit mad because my friend is using IE9 and it wont allow him access at all, Im now using IE9 and closing all the pages & clearing the cache I dont need to login - doesnt appear to be reading the .htaccess & .htpasswd properly