Ubuntu 8.04.1 works just fine on the MSI Wind just make sure you really have 8.04.1 since 8.04 will not install due to module crash.
Stuff that worked out of the box for me: Audio, Ethernet, WebCam, Bluetooth, SD/MMC card slot.
Wireless LAN was the only thing that didn't work out of the box. After I installed the right driver for the Realtek Unknown 8199i (rev 22) it worked. The driver is auto loaded and the network manager can configure it for WPA-PSK and unencrypted (only modes I tested).
The driver is rtl8187se get it from here the current version seems to be from 07.16.2008, this works for me.
The whole wireless lan issue with the MSI Wind is kind of strange. The initial report said that the Wind will have an Atheros based wireless card. The Media Akoya Mini apparently has a RaLink wireless card. My MSI Wind has a Realtek card. Anyway it works so I don't care.