I'm having a serious problem with WiFi on my iMac 21.5 inch running OS X Lion, up to date. It keeps disconnecting and when I reconnect it, it disconnects again, sometimes it stays on for about an hour or two, then disconnects again. Sometimes I have to restart my WiFi's modem. I check my phone, WiFi stays on all the time but only my iMac that keep disconnecting for no reason at all.
Is there any way to fix this? I've tried to Google and some answers I've already followed but none of them seem to work for me, so I thought I might try here see if any of you guys could help me with this problem. It's so annoying when I'm trying to search or even just watch YouTube videos and then it cuts off and on and off so many times. I'm using eircom broadband from Ireland.