Yeah Me too
55C is 131 *F most board limits are around 145*F ( 63 C ) That's hot.
mine is a X2 6000+ and runs idle at 29 C to 30 C
But then I use a chiller, not water cooled.
Water cooled can get you maybe just under ambient temps.
Usually my ambient air temps are around 80*F and cpu is 29C is 84*F ( again idle )
Under full load of cpu it can get to around 34C to 35C ...around 93*F
Thats not bad,,,,and it's not even OC'd .
What program are you using to get your temperature? Sometimes the motherboard program is not all that reliable. I've got an MSI nForce 570 motherboard that constantly says my CPU is -48°C even in BIOS.