Installed Lion today, some great improvements, some not so great (iCal… really?), and some frusterating changes than can be fixed.

• Scrolling seemed delayed and generally choppy on my magic mouse. The scrolling preferences are completed removed from the mouse system preferences. Instead they are hidden in the “Mouse Options” button in the “Mouse” tab of the Universal Access system preference. In the mouse tab you can also remove the scrolling delay.
• Safari’s cmd+option+l to open the download window was removed! Luckily you can add it back using a script by Daniel Jalkut bundled in a service bound to to the cmd+option+l keyboard shortcut.
• The new window zoom animation is really annoying. Luckily, you can disable it
• The only widget I really use is BeRuler, a simple measuring tool. It is only useful if the dashboard lays on top of the screen. Thankfully you can bring the translucent Dashboard mode back
• Mail has annoying new animations too, the hidden preferences to disabled them are:
  [code]
  defaults write com.apple.Mail DisableReplyAnimations -bool YES
  defaults write com.apple.Mail DisableSendAnimations -bool YES
  [/code]
• Not Lion specific, but I’ve found this to be very useful:[code]defaults write com.apple.finder _FXShowPosixPathInTitle –bool YES[/code]
• As a web developer I have a lot of windows open, I don’t want them restored after when launching Safari. [code]defaults write com.apple.Safari NSQuitAlwaysKeepsWindows -int 0[/code]