Wi-Fi issue in OSX Lion 10.7.2

Question

Shall i begin to say i love Apple and their great products so much! iI bought a 27'' iMac with snow leopard on it. I really was excited about OSX Lion, and it definilty make it expantasion clear it's a great os!
However since the upgrade to Lion there are some issues with the wi-fi conection it sometimes drops then i must reconect the iMac to my router then it works agian. Also the internet connection is very slow. i tried anything you can think of: Switch of wi-fi and then turn it on agian, remove the wi-fi and then enter the same router,switch security settings,switch the channel,reset DRAM it does't solve the problem. I really hope Apple can fix this issue,Aside from the Lion wi-fi drops my iPad had a issue with wi-fi as well under iOS 4.2 the wi-fi sometimes dropped under iOS 5 this is solved.

Answer 1

That does not work for me. I've done it numerous times on various wi-fi networks I use. On one unsecured network, the wi-fi connection came back automatically as I did other work, but I could not replicate how. Also, at two other locations that are important, and where I cannot influence the router settings (which work for all other user, as far as I can tell), I cannot restore the connection for the life of me. My wi-fi icon shows greyed-out bars with an exclamation point icon through the middle. I am on 10.7.4 now, but have had problems since 10.7.2. Here is some of the crap I get:
5/20/12 5:48:10.513 PM UserEventAgent: CaptiveNetworkSupport:CaptivePublishState:1211 en1 - PreProbe
5/20/12 5:48:10.545 PM configd: network configuration changed.
5/20/12 5:48:17.000 PM kernel: en1: 802.11d country code set to 'US'.
5/20/12 5:48:17.000 PM kernel: en1: Supported channels 1 2 3 4 5 6 7 8 9 10 11 36 40 44 48 52 56 60 64 149 153 157 161 165
5/20/12 5:48:18.000 PM kernel: AirPort: Link Up on en1
5/20/12 5:48:18.000 PM kernel: en1: BSSID changed to 00:23:69:ee:c2:10
5/20/12 5:48:19.596 PM airportd: _doAutoJoin: Already associated to “FREE Knology Hot Spot”. Bailing on auto-join.
5/20/12 5:48:22.511 PM mDNSResponder: mDNS_RegisterInterface: Frequent transitions for interface en1 (FE80:0000:0000:0000:0219:E3FF:FED8:8CA8)
5/20/12 5:48:36.099 PM configd: subnet_route: write routing socket failed, Network is unreachable
5/20/12 5:48:37.717 PM configd: network configuration changed.
5/20/12 5:48:37.744 PM UserEventAgent: CaptiveNetworkSupport:CaptivePublishState:1211 en1 - Probe
5/20/12 5:48:37.753 PM UserEventAgent: CaptiveNetworkSupport:CaptiveStartDetect:2371 starting probe to determine captivity...
5/20/12 5:48:37.753 PM UserEventAgent: CaptiveNetworkSupport:wispr_detect_redirect_async:424 user-agent:"CaptiveNetworkSupport-173 wispr" url:"http://www.apple.com/library/test/success.html"
5/20/12 5:48:37.755 PM UserEventAgent: async_http_read_stream:375 kCFStreamEventErrorOccurred kCFErrorDomainCFNetwork/2: The operation couldn’t be completed. (kCFErrorDomainCFNetwork error 2.)
5/20/12 5:48:37.755 PM UserEventAgent: CaptiveNetworkSupport:wispr_detect_http_done:196 DNS failure - scheduling timer to try again in 0.10 seconds. retryCount=1
5/20/12 5:48:37.857 PM UserEventAgent: async_http_read_stream:375 kCFStreamEventErrorOccurred kCFErrorDomainCFNetwork/2: The operation couldn’t be completed. (kCFErrorDomainCFNetwork error 2.)
5/20/12 5:48:37.857 PM UserEventAgent: CaptiveNetworkSupport:wispr_detect_http_done:196 DNS failure - scheduling timer to try again in 0.10 seconds. retryCount=2
Not sure that makes any difference. Any help is appreciated.