OS X Wireless Problems? Reset it all.
Wireless connection problem. Extremely slow wireless connectivity at home and work. Called apple care, they had me delete files: /Library/Preferences/SystemConfiguration/preferences.plist, /Library/Preferences/SystemConfiguration/com.apple.airport.preferences.plist, /Library/Preferences/SystemConfiguration/com.apple.network.identification.plist, /Library/Preferences/SystemConfiguration/NetworkInterfaces.plist And restart. You’ll have to re-add the wireless network settings you once had, but this should fix the problem.