I'm trying to install Ubuntu 9.04 64-bit version on VirtualBox, running in Windows XP. My PC is Dell Precision M2400 with Core2 Duo P8600.
After booting VirtualBox from Ubuntu ISO image and selecting the language and "install Ubuntu", PC reboots.
I've tested with different BIOS parameter combinations, but it didn't help.
Host OS is XP SP3 32-bit, and VirtualBox v3.0.8