This is perhaps just another data point, but I have been running Lion on a new 2.5 GHz Mac mini for a couple of weeks and I have not seen the problem of wifi dropouts. However I am hugely bothered by the spinning wheel and general slowness (relative to my MacBook Air running Snow Leopard). Very long application startup delays. Is there another thread that is addressing that issue (I didn't fine one when I searched)? I don't want to inject a second topic here but I would like to get it addressed by a larger group.
For me, i used to have the dropped Wi-fi connections too in Mac OSX Lion.
I think it has got to do with the IPv6 enhancements which didn't work well.. as I fixed it by setting IPv6 related options in the network settings to [Automatic] or something similar for both the Macbook Pro and the router. hope it helps!
My WiFi connection seems to be behaving better since, at the suggestion of an Apple technician, I changed my router from a WEP password to a WPA personal password. He said that Apple no longer supports WEP in Lion. I now have very few dropouts, no longer wipe out the entire wireless network, and it even connects after sleep.
Interested in whether this workd for you.
I'm in Italy and I also wanted to add my name to the list. Since installing Lion my wifi connection has never lasted more than a few minutes. I've tried all the suggested workarounds to no avail. Every time the wifi comes back on it fails after a few minutes or my iMac seems to self assign an IP to itself and won't connect to the internet. My husband's laptop running Windows connects properly and so does my iPhone (all at the same time as my iMac tells me there's no wifi signal). Please Apple guys come out with an update, I'm losing my patience!
My issue more serious than dropping connections. I CANNOT CONNECT!! I keep getting connection timeout from our all office access points. But anywhere else , i can connect decently.
I joined this company for 6 months now and had no problem whatso ever until 1 day after updating to lion. I HAVE NO IDEA , is it software or hardware!! In boot camp also my wireless is not connecting to routers...I cannot believe it is hardware issue because i can connec to all other networks.
Changing the wireless router config is IMPOSSIBLE. it take me 10 days to get appointment to see the IT guys and they are not going to change anyting on router. I end up buying a wireless usb adapter. It is ******* me off. Any help?
CoreWLAN: 2.0 (200.46)
CoreWLANKit: 1.0 (100.43)
Menu Extra: 7.0 (700.42)
configd plug-in: 7.0 (700.57)
System Profiler: 7.0 (700.3)
IO80211 Family: 4.1 (410.1)
WiFi Diagnostics: 1.0 (100.26)
AirPort Utility: 5.5.3 (553.20)
Card Type: AirPort Extreme (0x14E4, 0xD6)
Firmware Version: Broadcom BCM43xx 1.0 (18.104.22.168.6)
MAC Address: e4:ce:8f:03:ae:20
Country Code: X1
Supported PHY Modes: 802.11 a/b/g/n
Supported Channels: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 36, 40, 44, 48, 52, 56, 60, 64, 149, 153, 157, 161, 165
Wake On Wireless: Supported
I have just got off the phone from Apple, and my ISP about these issues we are having with Lion dropping its WiFi connection all the time. Apparently its to do with the channel your wireless router is transmitting on. The guy at Apple said that of the 12, apple products are made to work with 4. These are Channel 6, and Channel 11. I forget the other two. The way to fix it is to go into your router and change the channel from Auto (as mine was on) and set it so that it broadcasts on one of those channels. Its been an hour now and i havent had my WiFi drop out once.
If you dont know how to change your channel, do what i did. I phoned my ISP and asked, they talked me though it and now everything is working great!!!! Fingers crossed anyway!