Two minutes later (they really do have their system down), I left the store in a foreshadowing downpour. After looking at the startup, shutdown and disk capacity notes I've been collecting for a few days, I removed the shrink wrap and got down to business with the hopes of upgrading four computers today. Yes, I did buy the family pack. Five hours later, I'd only upgraded two machines. This is not because the upgrades didn't move along speedily, it was because I had some real head scratching problems to deal with.
The first: my 8GB 17" Unibody Macbook Pro running at 2.93 Ghz, took about 34 minutes to upgrade. As I thought, Apple hadn't gotten any better about realistic install times with the last 'under a minute' taking 7 minutes. No news there. Additionally, I gained only 2 GB of usable storage; I did do a Rosetta install. Damn you Quicken!
If you haven't installed Rosetta, and find that you need it, a very helpful box is displayed asking if you want to. It really didn't take a lot of storage at all.
I'd suspected that much of the reclamation of storage is due to clearing out caches and other garbage. What led me to believe this was that I ran Onyx beforehand, and that gave me back about about 8GB of storage right there from maintenance and cleanup. The truth about SL's space savings, however, according to David Pogue: most of the excess storage given back is saved in compressed code and not installing gigabytes of printer drivers that most users will never need.
What follows are a few initial notes from an installation that didn't go quite as smoothly as I had hoped.