Well i guess it is normal!! I have updated my sound card drivers and the temperature is still going up but slower! I think it helped a little bit. And i don't know why but it takes forever to open up firefox, and i know it wasnt like that when i bought the pc. Ive messed with the page file but i have put it back to System managed and even with the old windows 98 theme.
EDIT: Great after 3 hours spent on the phone with a Tech guy from Dell, they made the computer pass a series of tests (including booting up the machine without the hard drive, the ram and the keyboard). Now they just told me they will send a box with a brand new motherboard and a new cpu cooling system. Great! Now i got to find someone who is competent enough to replace the whole mb.