Upgrading to Mountain Lion. Is it bad when your installer has negative minutes then suddenly says 20 mins remaining. So now my 34 min install is going to be close to 54 mins. Me thinks Apple has copied a Windows feature. I call it the “predictably unpredictable installer progress indicator”. :-). In other words, start the install and come back a few hours later.
I’m having the same problem- did yours end up finishing successfully?
It did finish. It took about an hour and a half to complete.
You would be amazed how inaccurate progress indicators are and how much thought goes in to them…
http://www.chrisharrison.net/projects/progressbars/ProgBarHarrison.pdf