Hello all I have been fighting wifi issues since around Christmas (December 25th) on my 2011 iMac. I have only found a temporary solution, and that is to reboot my machine. This works for a (seemingly) random amount of time. It has worked for a day or two at a time before, and also not made it more than 5 minutes. When the problem really gets bad, I can lose a connection to wifi every 5-10 seconds for a few minutes, and then it will be fine for another hour before starting all over again. I say it seems like random intervals because I'm not aware of anything I'm doing differently at different times, but that doesn't mean I'm not. I have tried deleting my network from preferred list, then re-adding it. I have tried to reinstall the combo update from Apple I have tried to make a new location. Two weird things I have noticed. When the wifi constantly drops, so does speed. Normally I can achieve around 7mb/s downloads, but once the wifi issue begins happening, I am lucky to get 1 mb/s downloads - uploads are NEVER affected. I am looking for another idea. I saw someone say they reinstalled snow leopard, then reinstalled Lion and updated to 10.7.3 again and was just fine. I'd like to stray away from that if possible, but I'll do what I have to do in the end. This is a large enough problem I have pretty much stopped using my iMac because I need to be on the internet for my research term papers that are due soon. My laptop on 10.6.8 does NOT experience this problem at all. The other 15+ devices (xbox, ps3, windows and mac laptops (none on Lion other than mine) android and iphones/ipods) are not affected. My iMac on Lion is the sole device having issues. Any help would be appreciated.