The full page zoom seems very slow on Mac. On my Windows box, it's almost immediate, whereas on my Mac it seems like it takes almost a half second. They're both Core 2 Duo systems with 2Gb ram.
Is this just cairo being slow on Mac? e.g. Bug 363251 I hear that the next cairo update is supposed improve the speed on Mac.
Must have been the Cairo update, it's very fast now.