While trying to upgrade to version 6 I experienced the problem of the database tuner timing out. I contacted support for assistance. It was discovered that my SQL Express Database is greater than 4 GB. Apparently this is causing a problem. I have only been using AC about 19 months. Has anyone else encountered this problem of a too large sql express database? I am puzzled why the the database would increase in size so quickly. I have Sage Medware as my practice management system on the same Windows SBS 2003 server. I was wondering if this might be adding to the size of the sql database.