Problem with wifi

It may be a driver issue, I just did a freash load of Ubuntu 12.04LTS 64 bit on a HP Pavilion a6700y. The gui shows that the wifi is working but I can't see any wireless networks and I can't see the computer (set up as hotspot) with any portable device. The wireless adapter in the HP is a Lite-On Technology Corp. device FCC ID:PPQWN4300R. Any suggestions on how to get wifi working?

Thanks in advance,
Dave

I have a similar issue. I can connect to my wifi network but I can't access the internet.