I have a MacBook pro from July of this year which recently started having an issue with wifi connections. Recently whenever I connect to my home network I'm lucky if I can get anything close to full speed (54mps). Sometimes the speed is so bad I can't even connect. I have noticed this lately when I take my computer to coffee shops too so I know it isn't my network (my gf's macbook works great). I thought my wifi card was crapping out but I only have issues when running windows xp via bootcamp; in OSX everything works fine.