I have a two week old Pavilion that I use exclusively on public WiFi servers, and it is giving me fits. It knocks me off wifi at libraries, etc., in the middle of streaming videos (my job) and refuses to communicate with the various providers to allow me to log back onto their server. I suspect this is related to the crap malware "Cleaner" and "McAfee" blackmailware Microsoft bundled with their OS, but cannot seem to clean them off the PC.
That may not be the issue, but the HP doesn't perform the same way two days in a row. Constant Firefox crashes, the works. Something is interfering with the connection/communication.
I am about to return the computer to the store, as this wasn't an issue with the HP I bought two years ago. Out of the box, this POS barely works at all.