Uploadify does not work on password protected sites

[eluser]brian.89[/eluser]
I use the JQuery plugin Uploadify for uploading files. It works fine in all browsers. If however I implement a passwort protection via .htaccess like this

AuthUserFile /my/path/to/.htpasswd
AuthGroupFile /dev/null
AuthName "Private Area"
AuthType Basic

<Limit GET POST>
require valid-user
</Limit>

uploadify stops working in Chrome. In Firefox it still works, but password calls again.