Thanks for your replies.
@spivonious -- The BIOS pages do not provide temperature readings. lm-sensors does not support my CPU (Core i3) yet. I have not tried acpi, but will try. Any additional suggestions on how I can monitor temperatures and fan speed on an Ubuntu box?
@bryansj -- I will double check the plug I used. I can't remember if I used "J" or "L". Also, I did not remove any tape from the heat sink at all, so this could be prime factor for the behavior I am seeing. Thanks for this suggestion. I will remove the tape and perhaps use a different aftermarket thermal paste and report back here on the results.
@GuyClinch -- As ilovejedd also said, realtemp and argus monitor will not work for me because I am using Ubuntu as my OS and not Windows. Also, as I indicated above, I did not remove any tape off the thermal paste on the heatsink, so that may be the prime culprit here, but I am hearing from you that I should consider an alternative heatsink/fan. Any suggestions on ones you like?
@ilovejedd -- I checked the BIOS pages and, though there is a page for hardware monitoring, there is no listing of temperatures or fan speeds. There is an updated BIOS that was release (my MB has an older BIOS version). Perhaps flashing the BIOS will update the hardware monitoring pages to provide that info. I will do so and report back.
Again, thanks for your replies. I will try the suggestions listed and report back.