We had a issue with Anonymous Access in our production environment. Each time a user would go to that list information there would be prompted to login. We followed the the step below to get around it...
List Permission Settings
1. Stsadm -o deactivatefeature -url http://site.url.name -filename ViewFormPagesLockdown\feature.xml
2. Break the inheritance for the list
3. Uncheck the anonymous access for the list and save
4. Reapply the anonymous access for the list and save
5. Stsadm -o activatefeature -url http://site.url.name -filename ViewFormPagesLockdown\feature.xml
Useful link...
http://support.microsoft.com/kb/927082/en-us?spid=11373&sid=200