I tried Ubuntu 11.04 out on my Lenovo Low range laptop (G565), everything worked fine (Mainly Wifi, LAN, Camera, Touchpad, Sound, HDMI) with normal software and Medibuntu packages installed. Install was a breeze and updates while install was a brilliant improvement on the installer. Unity theme was a good upgrade in simplicity but removed many dearly features like applets on the taskbar (seriously missing Wanda and fortune :P ). Reliance Netconnect+ worked without installing any additional software, but did need a reboot to make it work. Keyboard can be selected to use ₹ (rupee symbol) directly with Right Alt + 4. Empathy works flawlessly but still lacks the plugins like Pidgin. Have lots to try out yet, but has been a very very smooth start compared to the older Ubuntu's.
-- Sanket Shah Via Chromium on Ubuntu 11.04