Look in the Amazing Charts folder for AmazingCharts.Idf file.
My practice has 3 doctors, two lab techs, 3 nurses and 7 office staff using Amazing Charts every day. A gazillion documents come in every day and are scanned into the system and forwarded to the doctor for sign off. Every request for medications, test results, call backs, etc are attached to a chart and forwarded to the physician. This may be the reason why our audit log files became so large so quickly.
Technical support was able to solve my problem and the upgrade to 6.0.9 went without a hitch. The system works great except for the slow down in Rx writing- especially when the interaction checker is running slow. GNicoll, perhaps you should let the technical support help you with your system.