GUID partition map should be the default on an Intel machine if you're using the drive it came with.
I've been bitten by that, wanted to install Boot Camp and the drive was formatted Apple Partition Map. For some reason when I initially installed the drive it didn't format as GUID. I had to go to Partition, 1 Partition, Options, GUID.
On a much slower laptop only 2 cores. BBedit works fine. So does photoshop and that is likely because I told the install to stick the 1.9MB of rosetta in. Works fine. BBedit is very snappy.
The whole experience on this laptop feels like an oil change. Everything feels smoother and snappier but it could be all psychological. In some things in photoshop the hair blows back. In the finder it just seems less irritating.
What stays amazing is the network stuff. Cover flow, everything accessing files over the network is as solid as can be an smooth.
So, in summary, I don't think anything is busted and everything works so much better. If you have 8 processors it is scary how fast it is.
You can find so much so fast:
 Control click her belt buckle to ... make her bigger.
Installed last night and was terribly disappointed ..... everything crawled along so sluggishly that I was concerned whether the Snowcat had broken something.
Turns out it was the indexing, which took about 45 minutes. Right after that, things went as expected. Nice.
Most of the space savings apparently are due to the fact that Apple now calls 1000MB a GB, instead of the customary 1024 ... but the system itself is indeed a small wonder. When a new OS makes old hardware faster, that's the ultimate customer service!
Only Cyberduck, the gnu ftp client, was broken, but a new version was already posted by the time I had discovered the problem. Let's hear it for Open Source!
Safari and Chrome are perhaps the greates beneficiaries of this upgrade. They are both open before the first bounce is done. The same doesn't hold for FireFox, however. I think Preview also opens files quicker than before. An entire folder of images within a second or so... that's nice.
Generally, I don't use Spaces and Expose, but one part of this will come in handy: click on an app in the dock and hold --- presto, now all the windows used by that app are shown separately. That can come in handy, when one has the desktop full of stuff.
Those with QuickTime Pro installed may be dismayed after the upgrade, because QuickTimeX has undergone the same dumbing down as iMovie. Alas, the registered Pro Version is simply moved to the Utilities Folder... I pass that one on, because I was really peeved until I found it.
It would be nice, if Apple finally saw fit to allow some baic GUI changes, like increasing the text in dialogues or menus. But that will probably have to wait for the Lion Upgrade.
"Humor ist, wenn man trotzdem lacht" (Humour means laughing despite of it)
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