As per the other posts, i have a couple of looks for OSX_REFOGKEYLOGGER.MSGKD15, a couple of web pages are trying to tell me that it is malware which multiplies or something, i did seem to be getting "1 threat found", then it kept going up and reached 16. My Mac had slowed right down. I went to transfer activation from another device to the mac but it seems no matter what i do the mac cannot connect to the internet. It has an Ethernet cable plugged in, wifi appears connected when i try it, i have also tried tethering to my mobile internet. The router appears to be functioning fine, i did a speed test from my mobile connected to it over wifi.