I have as well been receiving an inordinate amount of questions associated to the max file size the SharePoint 2010 supports. It is been clearly stated for some time that the max file size supported by SharePoint 2010 is 2 GB - http://technet.microsoft.com/en-us/library/cc262787.aspx#ListLibrary. A lot of customers are asking why. I am not on product team but usually couch it as SharePoint is a web based ECM platform. Two GB uploads and downloads is not very effective over the internet in general. Yes, internet speeds are getting better but still, that is a big file. Plus, if you are not using Remote BLOB storage, that is a lot of data to put into SQL Server.
If you have files that are larger than 2 GB you should look into storing the content externally and then utilize enterprise search and third party web parts to make the large files accessible through SharePoint 2010.
