I have BT Infinity as my internet connection. When using Safari on my iMac the opening page takes up to 15 seconds to load. I have tried various solution , i.e. resetting Safari, clearing the cache, running disk utility. I have changed my DNS to Open DNS, disabled the DNS perfetching. I have removed all the extension i use, the problem still persists. When using another browser, such as Chrome, no problem at all. My connection on my iMac is via ethernet so is rock solid as my email arrives instantly. I spoken to Apple about this, they seem uncertain why this is happening, so any thoughts from any one?