This is from a relative Mac newbie
It is not meant to represent anyone's experience but mine
I have a 27" 2010 iMac w/8GB RAM
I initially did a Lion update over my Snow Leopard installation.
All was ok until I updated to 10.7.1
After that I was beach balling ALL the time - especially when I would open System Preferences to get to the Start up disk preference (I wanted to get to my Boot Camp partition). - it would just freeze my dock and the preference and would require a hard power off reboot to get back to normal.
I first tried to do a repair installation but that failed with "less than one minute to go".
This was at midnight NY Time - and being a newbie I panicked that I was now the proud owner of a brick.
However, the GREAT guys at Apple Care Australia (the only english speaking land east of me that I could reach) talked me thru a reformat of the Lion partition and the use of my time machine disk and the GREAT migration assistant to get me up and running.
It is now about 48 hours in and I have not had one beach ball or ANY issues - rock solid performance.
One man's story.
Mark
It is not meant to represent anyone's experience but mine
I have a 27" 2010 iMac w/8GB RAM
I initially did a Lion update over my Snow Leopard installation.
All was ok until I updated to 10.7.1
After that I was beach balling ALL the time - especially when I would open System Preferences to get to the Start up disk preference (I wanted to get to my Boot Camp partition). - it would just freeze my dock and the preference and would require a hard power off reboot to get back to normal.
I first tried to do a repair installation but that failed with "less than one minute to go".
This was at midnight NY Time - and being a newbie I panicked that I was now the proud owner of a brick.
However, the GREAT guys at Apple Care Australia (the only english speaking land east of me that I could reach) talked me thru a reformat of the Lion partition and the use of my time machine disk and the GREAT migration assistant to get me up and running.
It is now about 48 hours in and I have not had one beach ball or ANY issues - rock solid performance.
One man's story.
Mark