Have to agree with Brahim in the original post. Installed Saucy 64 bit today, and after a fantastic experience with 13.04 Raring, this is a massive let down. I always seem to be disappointed with Autumn releases. Freezes, hangs, complete loss of the snappiness that was present in 13.04. This was a fresh install too, not an upgrade. Very sad about it.
On the plus side, it means as soon as Mint 16 is out I'll be installing that. Well, that was gonna happen anyway.
I've no doubt the Ubuntu base is still solid, and it's the Unity/Compiz layer causing these issues, so Mint Cinnamon should be fine - *fingers crossed*. But yeah I'm sad because I'm not someone who typically hates Unity at all. Here's hoping their LTS is much better, but what with the Mir/Wayland fiasco it might get worse.