What's the point of Prime95 on a multicore CPU unless you're running as many copies as you have cores. Surely you should use Orthos or something similar?
Core temps can drop very quickly tbh, probably not on an overclocked laptop in all fairness, but these Core 2's seem to change temp scarily quickly.
40 degrees won't hurt a CPU, bearing in mind silicon can stand well over 100 degrees, not strictly comparable to CPUs I know, but people do get worried about their temps being like above 55 etc for no reason. I bet most machines that sit turned on in offices all day idle at well over 50, just because they have little or no maintenance and poor cooling setups, and granted they probably arent ever used at 100% load, but you don't see them melting or catching fire.
ANYWAY, 1.6 up to 1.9 on a Turion lappy isn't too bad I suppose. Harjun are you using motherboard monitor to monitor your temps? I swear that program is very rarely correct.