I have a database with a SQL backend and Access 2010 frontend. I have different OS versions running in our office from Windows XP to Windows 8 and MS Office 2003 to 2013. Everyone in the office has 2010 or 2007 Access though. It runs great on every computer except for two Windows 8 computers in my office, it is painfully slow of these. One computer has 2013 Office and one has 2010 Office so I don't think it is an issue with Office, but I did think about the possibility of something in an Access database that doesn't play nice with the Windows 8 environment. Also, our office server runs on Server 2003 and has 2007 Office, this is also where the SQL backend is stored too. Has anyone else had issues running databases on the new Windows 8 computers?