We are running SharePoint 2010 Server. We have setup mysites on a seperate web application.
Whenever a user searches from our intranet for users, SharePoint will prompt for login for the data coming from mysites (the user profiles), until he/she eventually figures out how to get the credentials stored with IE.
Clearly, users can be instructed to store URLs in the IE "Intranet Zone", and also ensure that allow automatic login is enabled. This will allow IE to pass on credentials for the current user. However, it is cumbersome, and we will not succeed in getting all our users to do this.
Would be great, if we could just allow anyone to see everyones picture, without the need for authentication. Anonymous access for the MySite Web app cannot be set up, as far as I can see (option is greyed out).