The usual routine... download software, the window with your username comes up, you machanically tap in the password which you've been recycling for years and ... rejected. 50 tries later, having checked details scribbled here and there confirming the password, I was stuck. I am the only user (and my wife isn't going to bother changing passwords).
So I have two problems: How could this have happened and how do I recover or change my password without reinstalling the system and therefore losing a lot of software?
All help appreciated.