Just completed a configuration of another forum user's 59225 today, I jumped on remotely, dialed in and tweaked the cam and I think they are now very happy with the results. So as I (and others) have mentioned before, stay clear of the Intelligence Menu, Auto Tracking option and work with IVS rules, target zones, combination (depending on install) of intrusion and tripwire and overall image tweaks and you can get some amazing results. Not foolproof but certainly more in the 90% range for tracking as expected. This approach also means that whether your cam features auto tracking or not, combining this with call to presets/ tours etc means you can still end up with a very nice end result.
HTH