Ok so I've had my new iMac for a week now, all is great except the internet. Its connected wirelessly, but either goes really slow or websites just say loading. All the PC's in the house work fine. Airport is connected - however even though it is connected is always searching for networks? The Safari is slow and sometimes doesn't work at all. However always works upon a quick computer restart. I wonder whether I've changed a setting by accident, or is wireless just not very good on macs? Any advice would be great! Thanking you in advance!