Regarding your database is too big to run the tuner for upgrade to version 6, I'd like to know just how big is your database and how is size measured, eg: number of patients, file size measured in bytes, etc. Also, do you know which file it is that is too big, could it be amazingcharts.mdf? Mine is 1,009,856 kb but have nothing to compare it to.
I have held off on V6.09 in large part because of posts in the user board, because like many users, there is no option for down-time.
With regard to subscription support being AWOL, I mentioned it to an AC support staffer after I too experienced numerous failed attempts at getting "help me now" and was told someone is vetting the messages and if a practice is down, patients are waiting, the issue gets priority handling and a prompt call-back.