[ubuntu] AutoFS - UID/GID dependent?

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http://ubuntuforums.org – A buddy of mine was telling me how he prefers AutoFS to GVFS. I opted to give it a shot, but I'm not sure I understand how AutoFS actually works. I'm seeing some inconsistencies where it works in some situations but not others. I'm testing multiple user accounts which makes me wonder if AutoFS introduces an NFS style of usability where it needs to have identical UID and GID's from the server-to-client in order to successfully work. Am I correct in that understanding? Or did I do something else to cause these inconsistencies that I need to do some troubleshooting on? Thanks! (Hardware)