Wifi Constantly Dropping in Lion

I have a recurring "Wi-Fi: Looking for networks" message in airport every one or 2 minutes. Ever since Lion 10.7.3 update.

I can't even stream video much anymore because of it ( I have a 12 mb/sec Comcast connection).

It happens on several different networks with several different routers (airport and not, both 2.4 and 5.0, both g and N)

Older Macbook pro core 2 duo. Tried resetting SMC and clearing all previous networks.

Very annoying. I wonder when Apple is going to respond, there are 112 pages of complaints?

Just wanting to add my voice to the growing list of people affected by this crazy issue.

In my house I have two iPhone 3Gs running iOS 4, two iPhone 4s running iOS 5, a MacBook (May 2006) running OS X Snow Leopard and an iMac (Late 2009) running OS X Lion. Only one of those devices has trouble connecting, and staying connected, to my BoB2 wireless modem/router.

No prizes for guessing which.

And of note, it had no problems before I upgraded its OS to Lion. Ran Apple's iMac Wi-Fi Update, and have tried all the solutions suggested here, but still no joy.

1. I have had dropping wifi issues with the imac 27" i7 i picked up first week of 2012.
2. I had with the imac 27" i7 i ended up returning as well but not nearly as frequent.

no ryhme or reason.

btw hanging persists through both machines

Just purchased a new iMac in March for photo editing and am so disappointed with its connectivity issues. This is my fifth Macintosh computer (the others have been laptops - iBook, Powerbook, Macbook pro x2) and I'm really frustrated to find that this forum is the only place where people are discussing the issue - I thought for sure it would be front and center on Apple's support page, with a link to a patch to fix the problem.

When an Apple fix comes out, I hope we'll be getting an update.

NYCBrian wrote:

Just purchased a new iMac in March for photo editing and am so disappointed with its connectivity issues. This is my fifth Macintosh computer (the others have been laptops - iBook, Powerbook, Macbook pro x2) and I'm really frustrated to find that this forum is the only place where people are discussing the issue - I thought for sure it would be front and center on Apple's support page, with a link to a patch to fix the problem.

When an Apple fix comes out, I hope we'll be getting an update.

Have you tried the obvious troubleshooting steps, like making sure your router's firmware is up to date?

A lot of people like to blame Apple for issues when in fact it's amazing how many people's problems are solved when their third party router vendor updates their firmware.

That doesn't mean Apple issues don't exist, but rather that not every seeming "incompatibility' issue is Apple's fault.

William - I'm hesitantly optimistic that updating the firmware did the trick. Thanks for the suggestion.

Going to add my voice to this. Extremely frustrated that no fix is in place yet.

Bought my iMac with SL last June or July, upgraded when Lion was released. Ever since then, I've had a whole world of problems with wifi. Strangely, for a month or two, the problem completely vanished, then over the past 2-3 weeks, it's come back with a vengeance.

I've tried all the fixes short of a full system restore, which I'm not willing to do, as the machine is our daily driver and used for my partner's teaching work - any lengthy down time will affect her ability to do her job (as will downgrading to SL for software reasons).

The 'ping' solution is no longer working - a steady stream of pings to 8.8.8.8 used to do the trick, but that's now not working. I've installed the update/fix. I've gone through the removal/re-adding of locations/keychain entries, and no change. I've enabled and disabled 'N', I've changed beacon settings, I'm using the 'correct' type of security, and nothing. Often, after a reconnect or a change, it'll appear fine for 24 hours or so, then the problem will start again.

Over the past few days, the connection has been dropping after around 10 seconds of re-connection. Using the diagnostic tool, I'm finding that the events logger shows BSSID changed, same as a lot of other people experiencing the issue. Also, I'll get "country code changed", which I've seen a few other people around the net getting.

I know it's not a router issue, as all of my other wifi enabled products are fine, including my early 2009 MacBook with SL, which connects and remains connected in a reliable fashion. The iMac itself was also connecting fine and dandy prior to this.

I'm really appalled by this. I'm a huge fan of Apple's products, and my partner is now also a heavy Mac user. It's getting harder and harder to justify the £1200 we spent on the iMac with "it just works" when wifi connectivity is so useless. I can't undestand how they've managed to get this so wrong, and stay silent on it for so long too. Media outlets should be having a field day with this, and I can't understand why they're not.

Apple, please, if anyone is reading this thread, or many of the countless others, do something. When people are spending thousands of their hard earned dollars & pounds on these products, they deserve to be addressed when they have massive problems. Issue a statement. Acknowledge the fault. Do something. Anything.

While I'm waiting for this fault to be resolved, can anyone recommend a good wifi USB adaptor I can use? I need to do something to keep our connection going, and the layout of our house is going to make wired connections very problematic.

Mac 101

Humour attempt?

Guys I found the way!!! This happened unintentionally.

Just use Firefox , it works! 5 days now and wifi signal has never broken so I'm thinking the problem isn't in osx , its in safari!

I bought Iogear Gwu625-01 USB adaptor and it's great. I'd still like a software fix though.

I don't use Safari, ever, only Firefox and I have the same problems.

B

pillaishaun wrote:

Guys I found the way!!! This happened unintentionally.

Just use Firefox , it works! 5 days now and wifi signal has never broken so I'm thinking the problem isn't in osx , its in safari!

That's nothing to do with it. If you have an improvement then it's co-incidental with your change to Firefox.

I'm with the same problem. Every day at least one time my wifi connection drop and I need to connect manualy. Every time that this occurs, I receve that message at the console:

kernel: AirPort: Link Down on en1. Reason 2 (Previous authentication no longer valid).

I'm using the Airport Extreme.

I already tryed a lot of things, but nothing solve for me.

The funny thing is internet runs fine when I use Windows bootcamp and keeps dropping in the same machine. I tried turned off bluetooth (as I read somewhere saying the interference between bluetooth and wifi signal too) and internet works as well, but then i have no keyboard to use. I've been trying tons of solutions but non of them works, this is really ******* everybody off.