BIOS: fixed CMOS checksum calculation (to avoid guest warnings)

BIOS: improved APM support (to avoid guest warnings)

IDE: Linux 2.6.14+ and OpenBSD now operate the controller in UDMA mode by default

VMM: fixed hang when rebooting Windows 2000 guests with enabled audio adapter

VMM: fixed random user mode crashes with OpenBSD guests

VMM: increased timing accuracy (PIT, RTC), reduced PIT query overhead

VMM: tamed execution thread to make GUI more responsive (esp. when executing real mode guest code such as bootloaders)

VMM: significant performance enhancements for OpenBSD guests

VMM: several performance enhancements

VMM: improved memory layout on Windows hosts to allow for large amounts of guest RAM

VMM: significantly improved VM execution state saving and restoring (at the expense of state file sizes)

ACPI: fixed Windows bluescreen when assigning more than 512MB RAM to a guest

ACPI: correctly report battery state when multiple batteries are present on the host (Linux hosts)

ACPI: enabled by default for newly created VMs

APIC: added optional I/O APIC

Graphics: fixed distortion when changing guest color depth without changing the resolution

VRDP: added support for remote USB (requires special rdesktop client)

VRDP: added support for the Microsoft RDP client

VRDP: improved audio support

Floppy: controller can be disabled

Floppy: fixed "no disk in drive" reporting

Floppy: fixed writing to floppy images

VBoxManage: restructured USB device filter syntax to make it more intuitive

VBoxManage: added command for setting guest logon credentials

Additions: added installer for Windows 2000/XP/2003 guests

Additions: added custom GINA module which hooks MSGINA and can perform automatic logons using credentials retrieved from the VMM

Documentation: added draft of VirtualBox user manual