10.6.8 killed my airport

This seemed to affect my early'09 MB 5,1 as well - it would see wifi points, but would it **** connect to them. Even my iPhone 4, which my iTouch 2G and 3DS could still hook up to in hotspot mode, had no joy.

While gitting about with diagnostics, I changed the password on my phone's hotspot mode and deleted it from the remembered list on the MB. Et voilà - up and kicking once again.

I've now cleared my remembered list - off to McD's after work tomorrow to test the theory out. If no joy had, I'll be pulling the combo update down at the Apple Store in Newcastle. This last update put my modem into databurn for the next two weeks anyway, so it's their routers that'll be taking the strain...!

Ok I didnt fix this permanently with an SMC reset. It's happened since. I'm running 10.6.8 .

I've now found that when Airport is struggling to connect, if you put the Macbook into Sleep Mode and then wake it again, the issue is resolved for that occurrence.

Hope this helps.

I had a similar issue after updating my iMac to 10.6.8. Immediately after installing the update I found my wifi internet connection was dramatically slower.

I remedied this by turning off IPv6 (System Preferences > Network > (Network Connection) > Advanced > TCP/IP Tab — Switch "Configure IPv6" from Automatically to Off). Once I did this I also cleared my browser cache.

I hope that helps.

Yeah, ALL of my problems were due to something getting screwed up in the Airport Extreme. A hard reset (holding the button in for 30 seconds while plugging the power cable in) cleared up all the issues.

Same thing here with a 2 week old MBPro.

Will only connect for 2-3 minutes at a time.

there are three other laptops on my network that's haven't yet upgraded to 10.6.8, and all work fine.

I can also connect to a neighbouring office's WiFi network (Linksys based) without issue.

Seems to be a combo of the Airport base station and the 10.6.8 update causing the issue, as if either one of those isn't part of the equation, everything works fine.

Have just rebooted the base station and will report back.

As for me, Wi-Fi is working, but its transmit rates are killing me with its constant switching between 54mbps and 11mbps or something in between! Worst, I'm just a few feet away from my Airport Express.

I'll try resetting the PRAM and SMC and see if that helps.

UPDATE: Removing the base station from

System Preferences»Network»Airport»Known Networks

and then reconnecting and re-entering the password seems to have worked for me. The connection held stable all afternoon.

Hope that helps someone!

I'm having similar problems. Upgraded to 10.6.8 yesterday and about two hours later, my iMac couldn't connect to my wireless network (Time Capsule + Airport Express) and Airport Utility couldn't detect any wireless devices; in fact neither could my MBP. My iPhone would intermittently pick up the old wireless network. I managed to get it mostly up and running for a while after doing a soft reset by connecting the Time Capsule to my MBP with an ethernet cable and setting up a new wireless network. Seemed ok for a couple of hours...but I couldn't get my Apple TV (first gen) to see the new network at all. I thought it might be because my Apple TV is American and I read that American wifi devices only have 11 channels and my network was on channel 13. Anyway, the minute I reset the channels, the whole thing fell apart. I'm only able to connect to the internet now after doing a factory reset on the Time Capsule and just joining the default network. My iPhone are picking up the default wireless network fine, but my iMac (the one running the 10.6.8) can see the TC in Airport Utility, but it can't connect to set up a new network.

Sooooo aggravating...I had a functioning wireless network until I "upgraded."

I had this problem, working in an office, updating one iMac, not another.

I believe this may be linked to differences between US & EU/ROW wireless - where US hardware doesn't see channels 12 & 13. My suspicion is that Apple updated their software to match the lowest common denominator (ie. the US wifi settings) without telling everyone.

After the OS update, I couldn't see my nice, healthy wireless network - though the other macs were still accessing it happily. I changed the wireless broadcast channel from 13 to 11 and low and behold - it worked. There are so many networks here that I had to muck about a bit to find a new channel without interference (ie. lots of Airport drop-outs) and eventually settled on channel 1.

Working cheerfully now, I just hate Apple a little bit more today than I did yesterday.

I've spend quite some time trying everything suggested in this thread.

The only thing that actually seemed to eradicate the problem was removing the network from the "Preferred Networks".

Then again, 10.6.8 causes different problems for different people/macs.

Only time will tell what you have to do... [scary music]

This worked for me..!!!

After scraching my head for 2 days this is a life saver..

http://reviews.cnet.com/8301-13727_7-20075509-263/addressing-self-assigned-ip-ad dresses-after-installing-os-x-10.6.8/?tag=mncol;title

My wife's new(ish) MacBook Air had the same problem. As soon as she upgraded to 10.6.7, she lost internet connection - though wifi signal was still strong. We were hoping the new upgrade to 10.6.8 would fix the problem. It didn't. I tried everything - PRAM, disk permission repairs, etc etc. Finally, this evening, on a whim, I decided to input my old DNS settings (from when I was using the Witopia VPN) into her network settings. I have no idea why, but her connection returned immediately. I tried deleting them again to make sure it really was that, and the connection was lost. Put them back, and the internet came back. Bizarre. We are not even using Witopia anymore (we are in China, and use Asterill). Can anyone explain what's happening?

Thanks!

OK. Finally this trick worked for me -

I changed the security settings on my router from WEP to "WPA2 personal" and BOOM - everything worked like it used to before the upgrade to 10.6.8.

So, this is an option you all could try if feasible in your case.

OK. Finally this trick worked for me -

I changed the security settings on my router from WEP to "WPA2 personal" and BOOM - everything worked like it used to before the upgrade to 10.6.8.

So, this is an option you all could try if feasible in your case.