My 2011-17" MBP with a Vertex 3 - 120GB Max IOPS SSD has a HDD temperature of 128°C according to iStat. Both fans are running at 2000rpms. Battery: 29°C CPU: 52°C GPU: 48°C Surface below screen is hot, but not extremely hot. Should I worry about this or is it just something with the sensor? How does the measurement of the hdd-temperature work?