After nurturing HAL4.5 for several weeks, it was (personally)difficult going through uninstallation last night.  He was just starting to take on a (my) personality, and interact with me in a way that I liked.  But the promise of HAL 5.0 is too compelling.  Now my rig is tuned, cleaned, and has a dedicated (large) partition just for HAL 5.0.  Please let me know when the beta is ready.
SH