Comment 63 for bug 443185

https://answers.launchpad.net/ubuntu/%2Bquestion/95245?hl=en_GB

I did a little research and found the link above which was the solution:

UNCLAIMED Wireless Network controller [0280]: RaLink RT3090 Wireless 802.11n 1T/1R PCIe [1814:3090] - no drivers installed for wireless chipset on Compal KTV00 netbook in Ubuntu 9.10
Ubuntu Questions Question #95245

This solved my problem.

Msi u130, Intel Atom N450
2GB memory, WLAN 802.11b/g/n
Kubuntu 10.04 Beta 1