Safari requiring basic auth twice

Hi, I wonder if anyone can help with a problem I cannot solve. I have a website containing a directory protected by a .htaccess file. The directory contains htm files and .mov files.

Safari on the Mac OS is the only browser which displays the basic auth login window twice.

Once for the html file and then a second time for the .mov file. It even mentions the fact that its a Movie it need authentication for.

All other browsers only ask once and will display an asset from the protected directory be it a .mov file ot .html

The .htaccess file is:

AuthName "#######"
AuthType Basic
AuthMySQLHost localhost
AuthMySQLDB ######
AuthMySQLUserTable user_info
AuthMySQLEnable On
AuthMySQLUser ####
AuthMySQLPassword #####
AuthMySQLNameField user_name
AuthMySQLPasswordField user_passwd
AuthMySQLPwEncryption none
AuthMySQLGroupTable user_info
AuthMySQLGroupField groups

require group 1


Many thanks

Jon