I left the box overnight doing memtest86+ to find:

passed 10
errors 0

UPDATE:
Since the Ubuntu CD was giving me trouble I succesfuly downloaded, MD5SUM checked, SHA1SUM checked, burned and installed the lastest CD release of the following distros:

OpenSuse
Fedora
Mepis
Mandriva
PcLinux

Only the mepis install gave me trouble. It complained about a bios bug related to MMConfig. I updated my bios and after that Mepis has been running smooth.

Maybe this bug was giving Debian and Ubuntu's MDSUM a hard time.

Now I have my hand full of linux so I'll stop worrying about it.

Thank you all for your support

UPDATE:

I succesfuly downloaded, MD5SUM checked, SHA1SUM checked, burned and installed the lastest CD release of the following distros:

OpenSuse
Fedora
Mepis
Mandriva
PcLinux

I also Left the box overnight doing memtest86+ to find:

passed 10
errors 0

So this leaves me to the conclusion that the ubuntu alternate CD is either doing a bad job configuring my CD ROM or is just not lixbie's desktop friendly.


Thanks all for your support