Upon launching Azureus and beginning to download a huge file, the fans kicked into high gear. I found this quite odd, since Temperature Monitor indicated that it was running at a constant temperature of 123.8F throughout the download process. Not too hot that the fans would need to come on, I thought. However, I chalked it up to Azureus being a processor-intensive app and moved on. The download finished today and I closed Azureus, but the fans are still on and the temperature is still constant at 123.8F. This is interesting because on my previous PowerBook (a Rev. B) I never used to hear the fans kick on until the processor reached about 136F. I feel nothing but room temperature air being emitted from the back vent. Have they changed the minimum processor temperature that causes the fans to activate? I must say, this humming noise is very distracting.