OS X 10.7 Lion - review and crashes

Due to my excellent internet connectivity Lion has been downloaded in a few minutes. The installation took longer, but the whole process was less than one hour of effort (for the iMac). Meanwhile I also upgraded my girlfriend's MacBook Pro and it went smooth as well.
In this post I will record and share my experiences (be positive, negative or neutral).

Positives

• Performance has been significantly improved in all areas (system, already and newly installed Apple- and non-Apple software products)
• The UI has been refined and thus everything looks and moves smoother
• Mail 5 has really become excellent for mail reading
• The kernel is 64-bit on my Core 2 Duo iMac, too
• Mission control significantly improves the efficiency in a multi-desktop work environment
• The iOS-like spell and grammar check with the instant proposal reduces the time of error corrections
• FaceTime is included
• Launchpad makes starting of apps only with the mouse possible (I always used Spotlight)
• Many self-evident features such as the merging of identically named folders when copying with Finder have finally arrived

Mission Control

Neutrals

• Dashboard on an own space doesn't make sense to me, but it also doesn't hurt as the original setting can be restored
• The "natural" scrolling direction is as beneficial to me as the traditional and it can be restored as well

Negatives

• Launchpad is unstable: Crashes and rebuilds the database, thus the folders are only temporary
• appleprofilepolicyd is running even without a server and there is no way to turn it off
• applepushserviced is running even without a server and there is no way to turn it off
• Lion crashed due to a kernel panic after a few hours of usage (bug report submitted)
• Safari consumes more than 1.5 GB memory in scenarios, where Safari and Chrome are still under 200 MB