I don’t know why but when I upgraded to Snow Leopard my wireless internet got all wonky, connections were dropping left and right and I couldn’t maintain any worthwhile airport connection for longer than a few minutes.
* Disabled “Wireless G only” Mode – what seems to have finally sealed the deal was disabling ‘Wireless G Only’ mode that I had set on my router, yea things could theoretically be a little slower but I haven’t noticed, and I’ll wait an extra millisecond or two for a webpage to load if it means I can use my Mac Book wirelessly at home as intended.
Interestingly enough, I tried doing each of these things entirely on it’s own and it did not resolve the problem, it was the combination of everything that seems to have ‘fixed’ my airport connection problems.
Wireless Ethernet networks use 802.11 protocols to send and receive data.
Devices that use the older 802.11b and 802.11g standards are limited to data transfer rates of 11Mbps and 54Mbps, respectively, and they only operate on the 2.4GHz band.
Most of today's laptops, smartphones, and connected home devices use 802.11n, so an 802.11n router is a good fit for households that have a handful of these devices sharing Internet access.
But if you're using your network to share large files and have several smart TVs, gaming consoles, mobile devices, and media streaming devices connecting wirelessly, a more powerful router that offers the latest Wi-Fi technology may be in order.
* Turn Airport on & off (via menu or Network preferences) * Delete and then recreate/reestablish wireless network connection * Create a new Network Location * Make sure your router firmware and Airport card firmware is up to date * Zap the PRAM on your Mac (hold Command Option P R on restart) * Flush the DNS cache using the Terminal command: dscacheutil -flushcache * Delete the com.apple.internetconfigpriv.plist and com.apple.internetconfig.plist files from ~/Library/Preferences * Trash your home directories System Configuration folder and reboot – Remove all files within ~/Library/Preferences/System Configuration/ and reboot your machine.
Make sure you delete the proper folder, this is in your home directory.
When choosing a new router, you should consider the size of your coverage area and the number of clients, as well as the types of devices that will connect to the router.