First, we had the inevitable compatibility issues where several vendors, among them FileMaker, said that their applications may not work right on the new OS.
Then we get reports that upgrading to Leopard can leave some machines with a blank blue screen. This was eventually blamed on the third-party Application Enhancer utility, though the company that makes AE swears up and down that its software is not responsible.
Next, we get word that the firewall in Leopard lets more things through than a third-string goalie.
And this was after Apple took an extra four months to fix things.
Cotton seedling freezes to death as Chang'e-4 shuts down for the Moon's 14-day lunar night
Fortnite easily out-earns PUBG, Assassin's Creed Odyssey and Red Dead Redemption 2 in 2018
Meteor showers as a service will be visible for about 100 kilometres in all directions
Saturn's rings only formed in the past 100 million years, suggests analysis of Cassini space probe data
New findings contradict conventional belief that Saturn's rings were formed along with the planet about 4.5 billion years ago