While 380 Watts sounds aplenty, you hae a very full machine and lotsa Watt eating parts.
Do your homework with ...
How much power do I need? -> http://www.tomshardware.com/howto/20040122/
Next, you may need to tack on 100 more Wats since not only does the specifications fib, but in one year the PSU will degrade up to 50%. Read http://www.tomshardware.com/howto/20021021/
WHAT THIS MATTERS. A power supply with just enough Watts will dip out or droop and the motherboard power supplies and capacitors will work harder causing some stress there.
IN CLOSING, HEAT IS BAD. If your machine is hot to the touch, then it's too hot in there and your parts are aging rapidly. You will see failures very often with boards, drives and what else is in the hot box.
I custom built a PC over the summer to bring to college with me. I had it assembled and working for 2 months without any problems. During the first week of September, I came to school and had the computer configured for the network, installed Windows updates, etc. After the configuration, I hooked the computer up in my dorm room. After about 4-6 hours, the motherboard failed. (I have been told by a PC repair company that a voltage regulator fried.) I purchased another motherboard (same model as before) and installed it. Between 4 and 6 hours after I had the system up and running, the motherboard again failed with the same symptoms as before. (I assume another voltage regulator blew.)
Any ideas why after 2 months without any problems that the motherboard would fail within about 6 hours of setup? (During those two months, I did CPU/system
OS: Windows XP Professional
Motherboard: Foxconn 875A02-6ERKS
CPU: Pentium 4 3.2 GHz Prescott
RAM: 2 x Corsair Value Select 512MB DIMM
Video: ATI Radeon 9800 Pro 256MB
Case: Antec Sonata (with 2 case fans)
Power Supply: Antec True 380 Watt (already checked for voltage/other irregularities)