I've seen quite some people with the same issue, but I haven't been able to find a solution for this: I've installed the latest version of YDL on my iMac (G5 1.8 Ghz, 2 GB DDR). Install went fine, booting is fine, I can use the product without any problems. But ... the fans in the Mac are *ROARING*. They make more noise than my printer on steroids. I've applied all updates.
Any ideas?