Hi, I found a bug in the "First boot configuration" procedure, while setting password.
If you choose a password with at least a "$" inside, when you try to login after the installation is completed, it does not work correctly. I first though it was a keyboard related issue, but if I type the $ character (SHIFT + 4 on my italian keyboard) inside previous not masked fields, I can see the $ character typed correctly. I tested the LAMP and the RedMine appliance, and they both have the same issue.
To reproduce the bug, try using a password like "lamp.$$01": when you reboot you will not be able to login correctly. Try using "lamp.4401", with exactly the same parameters used for previous installation, and everythings goes fine.
Don't now if it's helpful, but I use VirtualBox 4.0.0 on Windows 7 64 bit, and I chose to apply security updates at the end of the installation.