Possible Duplicate: My computer boots to a black screen, what options do I have to fix it? Some time ago (2 weeks) I ran apt-get upgrade. When complete I turned off the computer. I was on ...
I just did system upgrade form 9.10 to 10.04 using alternate CD described here: https://help.ubuntu.com/community/LucidUpgrades#Upgrading%20Using%20the%20Alternate%20CD/DVD - I did it this way because ...