I have no issues with 12.04 and everything runs smooth, I really do not see any new features from 12.10 that are worth upgrading to maybe in 13.04 in april.
Here's my hardware on my development machine.
64GB DDR3 1600MHZ
Core i7 3.6 Sandy Bridge E (can't wait for ivy bridge E!)
Nvidia Geforce GTX 680 2GB (launch reference card)
12.10 should not be slow, some fine it snappy on lesser hardware, what gives?
Could do without the amazon bloated ads..