Flawless upgrade from 7.04 to 7.10. Ubuntu asking to use the proprietary driver for NVIDIA GeForce FX 5500 was a pleasant surprise. My specs:
VAIO PCV-RX770 - 2.20 GHz, 120 GB 5400 rpm HDD, 1 GB DDR RAM, GeForce FX 5500 128 MB
Kudos to the Ubuntu Project for making this possible.