Our Internet connection has been painfully slow at home for the past few days. Or so I thought. It turns out that the hardwired connections (like the ancient iMac in the kitchen) are just fine, but the wireless network is behaving very oddly: uploads from our computers to the Net are speedy, downloads crawl. Unfortunately, most stuff (email, web, podcasts) requires downloading more than uploading.
I've tried restarting the AirPort Express that serves as our base station. It shows full bars for signal strength, so that's not a problem. I've tried disconnecting it and hooking up the old flaky Linksys base station—which was still flaky. I've changed the AirPort Express wireless channel, gone to 802.11g only (instead of mixed b/g), turned on Interference Robustness, increased the multicast rate, and so on.
Next I'm going to reset the firmware on the base station. If that doesn't work, I'll see if turning off network encryption, or changing the encryption type, makes a difference. In the meantime, we're mooching off a neighbour's NETGEAR router, which is (strangely) sometimes locked down and sometimes not.
Any other suggestions? This setup has been fine for months and months, so why it's suddenly gooping like molasses I have no idea. Networking remains voodoo, I tell ya.