I've checked the actual temperature of the drive casings inside my player and the temperature I recorded was only 1 deg C below that which was displayed by Vital Signs (44C vs 43C). I've also checked that the digital thermometer I used is calibrated correctly - within 0.2C @ 100C. I ordered a fan today from RS which I hope will fit inside the casing. If you've read this thread then you'll know that I had my player alarming out at 57C on just a 2 hr journey.