Thanks so much Allen...
I have 8 GB RAM in both Macs. I am still running 3.2 on the old i Mac and 3.4 on the MBP...
On the iMac, response is slow, and at times it even freezes and I have to do a hard start. That is why Iam a bit afraid to go to 34 on the iMac. Wish I could put more RAM on these machines but they are limited,I believe, to GB RAM. Not sure if Aperture 3.4 uses more system resources than 3.2, which is one reason why I have hesiutated to upgrade the Aperture on my iMac
By the Way, I am running Lion on both and haven't yet upgaded to Mtn. Lion.
Am tempted to wait for the Mac Pro to come out, rather than get a new iMac I believe the Mac Pro will last longer, been more versatile and I can swap out compnents.
- David