:o) as for spring.... judging by the sudden appearance of a phletora of birds, literally over the weekend, since last friday.
Just thinking out loud, what made this upgrade difficult was only psychological. Why is that?
Fora on apple and other sources are full of people reporting tons of difficulties when installing SL. Who would not become somewhat suspicious?
My experience on two macs was straight forward. Thanks to good advise and common sense.
I would summarize a good strategy in 10 steps, I know it is basic and only personal experience, but may be it helps the one or other.. In particular order
Clean out unnecessary files and check you system hard drive for health and repair permissions. I recommend Diskwarrior.
Alternatively, just run repair permissions from disk utility.
Before you continue preparing to install SL, it is a good idea to make some downloads first.
Check for new SL drivers, your sound card, printers, graphic tablet, application updates, whatever might be connected and installed, search for up to date Snow Leopard drivers.
Here is a useful link:
Also, download the latest Snowleopard combo Update available, currently as of mid February 2010, it is OSX 6.2
Now, with drivers and updates downloaded, perform a complete system clone (Super Duper, CCC) of your existing OSX.
Do not believe the advertising. Make an acid test yourself, and try this clone you made first. Boot from the clone and see whether everything is the way it was in the original system.
While you booted from your clone, use diskwarrior to rebuild and replace directory of your original internal HD that has OSX installed.
If you do not use Diskwarrior, skip that step.
For peace of mind, have an identical second system clone on a second hard drive.
Unplug all external devices except mous and keyboard first!
Use your SL Install disk and install SL.
Process should take round about 1- 1,5 hours.
After everything went successful, use your latest SL combo update that you downloaded.
There are security updates, Java updates, and others still available, it is safe enough to then use the Software Update from the apple menu.
Re connect external devices again. Last not elast after everything has been installed, do not forget to switch on the firewall. It is off by default.