My experience is slightly different. I upgraded VirtualBox on XP to 3.1.2 and Alpha 1 ran OK on it. I then did a fresh install of Alpha 2. This worked until I installed the first batch of updates. Then I got the failure to boot as described by Paulo (black screen with a white underscore on the upper-left corner). So I then did a fresh install of Alpha2 (same iso as before) hoping it would boot, but it does not.
-- virtualbox: Lucid alpha2 does not boot https://bugs.launchpad.net/bugs/508777 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs