Just an update:
I have restored the unit back to factory setup with the acer restore CDs. Then I installed the latest Omega drivers rightaway but without the Radlinker just to lessen the complication. And I chose not to install XP SP2 as well, btw. Installed some programs that I need to use immediately like Norton Ghost, Photoshop, Sony Vegas/DVD Architect, MSOffice and Firefox. So far, no freeze-ups and auto-reboots. In the computer properties/advanced/startup&recovery, I unchecked automatic restart, just to be sure its doesn't reboot in case of system failure.
I tested all the programs I installed, no errors. Looking good :-) I burned a couple of CDs,DVDs, tried some video and photo editing. Connected some devices like the camera and the printer as well as an external HD. Everything is running well.
Took me about 3 hours to do everything just that. I'm not finished just yet. I decided to run the latest memtest overnight. After around 8 hours, 30+ passes, no errors were found, so I guess everything is well with the memory.
This morning, I was able to operate the unit for 2 hours with no freeze-ups and reboots as well. I was able to burn DVDs without any problems. Was able to restore all my files from the backup I did yesterday. Norton Ghost did well except for two files which I cannot restore but it's ok since those aren't important files anyway. Looking good, and it feels good at that.
It's just today while writing this, that I just update the virus defs of my Norton AV. There were reminders to Windows updates but I decided not to download/install them just to keep everything as simple as possible.
Tonight, I'm going to install few more programs that I need like Softimage XSI (3D) and Digital Fusion. These programs will really drive this Ferrari hard. Then install some games like NFSU2 and warcraft. In the weekend, I'll let you know with the results of these installs. I'm keeping my fingers crossed :-)
PS: I've decided to get the 2 X Kingston 512MB DDR333 instead of the DDR400, just playing it safe since nobody here ever tested the Kingston DDR400 with the Ferrari yet. At least its' gonna be way better than the stock memory :-)