I tried the new Ubuntu Netbook Remix 10.04 (Lucid Lynx) today on my Compaq Mini netbook.
I have tried all previous versions since I got my netbook. But everytime there has been a problem with the driver for the wireless network card. Previous versions have shown a GUI saying: you need to install a proprietary driver and when I clicked it the computer just locked. I have gotten some helpful tips on executing a some commands in the terminal, but I haven't bothered to try that. Even though I think I'm capable of executing some commands in the terminal I don't think a OS is worth my attention if there is not a simpler way to get such a basic feature as wireless network.
But today on the 10.04 the GUI click to install the driver worked! So now I think I will try this OS a bit more.