PCMag has tantrum about Leopard.

Oliver Rist from PCMag on Leopard

Before Apple makes any more smug OS-related attacks on Microsoft, it ought to take a good look in the mirror.

Troll, -1

Just like any update, Leopard will tickle existing issues if done as an upgrade. System updates are the biggest turmoil you’re ever going to create for your system.

But the article is fluff, ignore at will.