I upgraded to version 9.3.014.000 with no hitches. I was thinking about doing a clean install, but thought I'd try an upgrade first.
I unticked the box saying; "Load ZA at Stat-up"; unplugged my PC from the net and choose "Upgrade". It upgraded smoothly, and without any problems. Very pleased! Plus - it's kept all of my settings too! Don't have to worry about "training" the SmartDefence anymore ^_^
As of yet I have not encountered any corruption issues - if so, I'll do a clean install next time and learn from that for the future!
Overall though - very happy.