For the past several months, I've had increasing trouble with my 17" MacBook Pro (purchased last summer) not finding my regular wifi networks, getting terrible connections to access points that are very close by, and generally making it much easier for me to use wired rather than wireless access whenever possible. I've been waiting 'til the school year ended to send it in for service, but now I think that was a mistake in judgment.
I'm out of town at the moment, in Canada, where my cell phone incurs expensive roaming charges, and where I really need to be able to be online to do work as well as communicate with friends and family. Except my computer will not connect to the hotel network from either of the two rooms I've tried. It will work (most of the time) in the hallway, or the lobby. But not in the room--the signal drops to one bar, and then disappears completely.
I finally discovered that if I set the computer up on the bathroom counter (that's the hallway-facing wall), I can get only with at least a weak signal. So right now I'm sitting at a chair I've dragged into the bathroom from the guest room, with my hands at a completely uncomfortable angle, just so I could make a Skype call home and start grading online assignments.
I've been through a bunch of forum suggestions for fixing this...from trashing the system preferences to zapping the PRAM. No luck. Even in the bathroom, the signal keeps dipping from 3 bars back down to one, which is making me think that it's a hardward problem rather than a software one. As danah, would say, "le sigh".
I leave Winnipeg tomorrow for Montreal, where hopefully the hotel room will have a hardwired connection rather than only wifi. And next time I travel, I'm bringing my Vaio with me.