Thanks James...I did set-up a bluehost account a few days ago to use as a test site. They are running 4.1.18 on the server I'm on, so it may be a good idea for me to upload a couple of my databases there to see what happens.
I'm sort of in a dilemma at the moment...I have some production installs working fine on my server and I have two new accounts that I need to set-up within the next week on that server. I would like to set-up one of them as a 1.6 site from the start, but I'm weary about upgrading MySql. But, if I'm going to upgrade, then I need to do it this summer while things are quite....in the fall when school starts back it will be too late and I won't have time.
Oh well....we'll see what happens.