I have been having a lot of issues with the system lately..the cpu usage seems to increase all of a sudden to 100% and sometimes, a lot of CPU cycles are taken up by applications like opera or my firewall (armor2net). I checked the system temperature, and my cpu temperature varies between 60 and 75. currently it is 63 degree centigrade. The case reading is about 67 and its constant at that, and the motherboard temperature is about 37. These temperatures seem to be on the higher side. Also, the local temperature at the place where i live is about 30 degree centigrade. Currently i have one fan over the cpu with the heatsink, a fan in the rear and a fan at the side. The CPU fan speed is about 5200 rpm. My system is : Asrock 865gv intel chipset motherboard, 2.4 Ghz celeron cpu, 768(512+256) ram, nvidia 5200fx graphic accelerator(PCI), 300 watt smps, one 40 gb ide hdd and one 80 gb sata hdd. One dvdrom and a floppy drive. What sort of problems should i check for in my system?