Q: 27" imac wifi problems (intermittant)

The funny thing is internet run 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.

Just to add my tale of woe too.

I bought mid-2011 27" iMac 3 weeks ago and have experienced exactly the same as most people on this thread.

I`ve followed most of the fixes people have suggested and ended back to square one. Intermittant wifi dropouts. Apple (Japan) arranged to have it serviced. It was picked up this morning and is being sent to the US.

From what I`ve read, I`m not very confident of this being resolved.

Can we try ways of publicising this fault to perhaps stop others from falling down the same rabbit hole?

Any ideas?

Someone needs to bring this issue to Reddit, the front page of the Internet. Maybe they could draw the appropriate attention to the cause.

That my I idea to I posted on some other forums the same idea, like the iphone 4 apple will not react until it's public.

Nobody seems to care.  I read on another forum mountain lion doesn't fix this problem so we are all stuck.

I'll apple but even more if they fix this airdrop doesn't work if your wifi is not enable so no interaction between your imac and macbook. 

People make it more public.

To be more specific about my problem, it is not that the iMac ever really drops the WiFi signal completely, just that it is so much slower than my other devices connected to the same router (Airport Express). My iPad (3) routinely gets 35mbs Up and Down, the iMac tops out at about 3mbs Up and Down.

Hi ,

I also have a giant sandpit in the garden and when the Apple team take their head out of it I will let you know what they think !

Ok I've had the same problem for some time.

Strange things is my iPhone and iPad are connected on the same network and they work perfectly.

I range the supplier which I bought the iMac from.

I applied a cmd + alt + P + R

Turn off the iMac and when it starts up hold these 3 buttons down for 3 chimes.

This restarts all the iMac's internal prefences without messing up your personal settings.

This seems to have fixed the problem.

I applied this trouble shoot this morning so I will test it for a couple of days.

But it's working like a charm for the time being

There must be some sort of bug in the system somewhere.

An update to fix this would be nice please apple?????

I'll ad myself to this discussion because I'm having the same Wifi problems. Tried everything, but nothing seems to work. I have an iMac 20" mid 2007 with no wifi problems and a iMac 27" mid 2011 who drops the wifi on a regular basis. Both are running 10.7.3 with the latetst updates. Even did the wifi update from Apple. Yesterday tried osx Atheros 3.2 kext patch, but also no luck. iPhone 4 and iPad 1 also have no problems. I'm certain it hasn't anything to do with the router, I'm convinced it's the iMac. Frustrating!!!

So this is day 2 of using my iMac 27" mid 2011 since I did the cmd + alt + P + R and the wifi seems to be workinf perfectly. Will post tomorrow to see if it's still working ok.

Hello,

I'm having the same issue, and despite two long calls with AppleCare, I was told nothing else could be done.

I have now hooked up an Airport Express hoping this wifi signal is not lost. I have read what others wrote about this 'solution' and the interference problems. I have no other choice to be frank. I'll report back in a week.

I work from home to an internet connection is vital, and a wired connection is not possible. It would cost too much in wiring and I hate having wires trailing all over the place.

Best wishes from London.

They picked up my iMac on Sunday morning and it came back to Japan from the US on Tuesday night.

I`m impressed by the speed.

They said they couldn`t reproduce the issue at the service centre but replaced the airport card anyway.

So far it`s working as it should. Fingers crossed this will continue.

Good morning,

Usually when I start work my wifi connection would have dropped overnight, but since hooking up the AExpress to be the home wifi, things are running nicely, and fast too. Its probably too early to say at the moment but I think this solution might have worked, for the time being. Hardly a solution though, at least I had a spare AExpress N around to help.

Will keep you all posted of my progress.

Guys

FIX!

Looked at router, was G only Switched to N only.. fixed everything, we couldnt connect for longer then 5 min and this is a new thing as of last week. nothing else has changed except normal software updates.

Two imacs in the same office both lion both same problem, everyone else is fine. I honeslty can't handle how fast the internet connect is  now...my hair was blown back.

Try it!

Add our family to the list of disappointed buyers of the 27" iMac. We bought ours a month ago and have had nothing but problems with the wi-fi. I have an ethernet port available, but only if I make the huge investment in time it will take to move my router, modem and cables to the other OLDER computers with working wi-fi. However, I refuse to accept that as a solution given how much money I've spent on this NEW computer.

This is the 6th ACTIVE Mac in our house (3 others sit in the basement in retirement), we own 2 iPads, 4 iPod touches, 5 iPod nanos, 4 iPhones and 3 Apple TV's. For the first time in my life I heard my wife say something negative about an Apple product. Her qoute: "I HATE this computer." 

Please fix this Apple.

http://www.reddit.com/r/mac/comments/st6pa/major_wifi_problem_with_27_imac_pleas e_help_bring

A link to reddit. lets get this noticed.