I installed 12.10 on an Acer Aspire One 725. There were intermittent problems with the WiFi disconnecting and connecting again and again.
I thought this might be an issue with 12.10. So I installed 12.04. I'm getting the same problems with 12.04 too. Which probably points a finger at the hardware or drivers for the Aspire One 725. I have six other devices that are working perfectly with the same WiFi router.