* VMM: fixed IO-APIC overhead for 32 bits Windows NT, 2000, XP and 2003 guests (AMD-V only; bug #4392)
* VMM: fixed a Guru meditation under certain circumstances when enabling a disabled device (bug #4510)
* VMM: fixed a Guru meditation when booting certain Arch Linux guests (software virtualization only; bug #2149)
* VMM: fixed hangs with 64 bits Solaris & OpenSolaris guests (bug #2258)
* VMM: fixed decreasing rdtsc values (AMD-V & VT-x only; bug #2869)
* VMM: small Solaris/OpenSolaris performance improvements (VT-x only)
* VMM: cpuid change to correct reported virtual CPU id in Linux
* VMM: NetBSD 5.0.1 CD hangs during boot (VT-x only; bug #3947)
* Solaris hosts: fixed a potential host system deadlock when CPUs were onlined or offlined
* Python WS: fixed issue with certain enumerations constants having wrong value in Python webservices bindings
* Python API: several threading and platform issues fixed
* Python shell: added exportVM command
* Python shell: improvments and bugfixes
* Python shell: corrected detection of home directory in remote case
* OVF: fixed XML comment handling that could lead to parser errors
* Main: fixed a rare parsing problem with port numbers of USB device filters in machine settings XML
* Main: restrict guest RAM size to 1.5 GB (32 bits Windows hosts only)
* GUI: fixed rare crash when removing the last disk from the media manager (bug #4795)
* Linux hosts: don't crash on Linux PAE kernel < 2.6.11 (in particular RHEL/CentOS 4); disable VT-x on Linux kernels < 2.6.13 (bug #1842)
* Linux/Solaris hosts: correctly detect keyboards with less keys than usual (bug #4799)
* Serial: fixed host mode (Solaris, Linux and Mac OS X hosts; bug #4672)
* VRDP: Remote USB Protocol version 3
* SATA: fixed hangs and BSODs introduced with 3.0.4 (#4695, #4739, #4710)
* SATA: fixed a bug which prevented Windows 7 from detecting more than one hard disk
* iSCSI: fix logging out when the target has dropped the connection, fix negotiation of simparameters, fix command resend when the connection was dropped, fix processing SCSI status for targets which do not use phase collapse
* BIOS: fixed a bug preventing to start the OS/2 boot manager (2.1.0 regression, bug #3911)
* PulseAudio: don't hang during VM termination if the connection to the server was unexpectedly terminated (bug #3100)
* Mouse: fixed weird mouse behaviour with SMP (Solaris) guests
* HostOnly Network: fixed failure in CreateHostOnlyNetworkInterface() on Linux (no GUID)
* HostOnly Network: fixed wrong DHCP server startup while hostonly interface bringup on Linux
* HostOnly Network: fixed incorrect factory and default MAC address on Solaris
* DHCP: fixed a bug in the DHCP server where it allocated one IP address less than the configured range
* E1000: fixed receiving of multicast packets
* E1000: fixed up/down link notification after resuming a VM
* NAT: fixed ethernet address corruptions (bug #4839)
* NAT: fixed hangs, dropped packets and retransmission problems (bug #4343)
* Bridged Network: fixed packet queue issue which might cause DRIVER_POWER_STATE_FAILURE bsod for windows hosts (bug #4821)
* Windows Additions: fixed a bug in VBoxGINA which prevented selecting the right domain when logging in the first time
* Windows host installer: should now also work on unicode systems (like Korean, bug #3707)
* Shared clipboard: do not send zero-terminated text to X11 guests and hosts (bug #4712)
* Shared clipboard: use a less CPU intensive way of checking for new data on X11 guests and hosts (bug #4092)
* Mac OS X hosts: prevent password dialogs in 32Bit Snow Leopard
* Solaris hosts: worked around an issue that caused the host to hang (bug #4486)
* Guest Additions: do not hide the host mouse cursor when restoring a saved state (bug #4700)
* Windows guests: fixed issues with the display of the mouse cursor image (bugs #2603, #2660 and #4817)
* SUSE 11 guests: fixed Guest Additions installation (bug #4506)
* Guest Additions: support Fedora 12 Alpha guests (bugs #4731, #4733 and #4734)