I realize that this is a 7800 vs 6600, but just wanted to add......
A buddy of mine came over with his MBP (ATI X1600 video card) with Aperture installed. The sliders on the MBP were much smoother than my Quad (Nvidia 6600) as well as scrolling thumbnails. The Loupe tool also reacted better, but still had some lag time, although not as jerky as my Quad.
I have an .aplibrary on an external LaCie 500GB with FW 400/800. I connected it to my friends MBP (FW 400 only) and ran some tests with the Adjustments HUD and scrolling. I had 'Create new version with adjustment' checked in prefs.
On the MBP, there was a slight delay (very, very slight) when creating a new version (instantaneous with its internal HDD) due to the speed of the external drive. However, the adjustment sliders were still much smoother than using the same external drive on my Quad (connected with FW 800).
I could go on and on, but the point is this.....
The Nvidia 6600 is a DOG of a card with Aperture. It has since been removed from the spec sheet on this page....
http://store.apple.com/1-800-MY-APPLE/WebObjects/AppleStore.woa/wo/0.RSLID?mco=8 D19F826&nplm=MA438Z%2FA
....and is only a minimum requirement on this page....
http://www.apple.com/aperture/specs.html
Why it is on one page and not the other only Apple can tell us.
The better question is "What is Apple going to do?". There are many of us that bought the new Quad, when it was first announced, with the Nvidia 6600. We have been left out in the cold. We were given a spec sheet that was wrong and no we are told that there are, NO UPGRADES!!
In my order, the only other vidio card option was the $1650 Quadra card (too much). The Nvidia 7800 wasn't offered until after my Mac was shipped.
Aperture was in the same order with my Quad, so Apple knew what I was getting and why I was getting it (Photo work). Yet 6 months later, Apple has yet to contact any of us with this issue.
Yes, I tried customer relations. They offered me $60 off on a $200 purchase. Basically, spend $140 more in our store, STFU and go away.
Joe, thanks for the 1.1 update, but my $5300 system is a 'Pig' running Aperture as compared to my friends $2800 MBP. And my friend can take his computer out anywhere he goes!!
"^@#&(*(*%%TYF%^&#&*(*(*^#!@&()%%@$%^&#&%*"
Narvon
Quad 2.5, 6600, 4GB ram Mac OS X (10.4.5)