This is a maintenance release. The following items were fixed and/or added:

• VMM: fixed guest hangs when restoring VT-x or AMD-V saved states/snapshots
• VMM: fixed memory allocation issues which can cause VM start failures with VERR_PGM_MAPPING_CONFLICT error
• VMM: fixed host crashes/hangs on certain 32 bits Windows systems when running Linux guests (bugs #1606, #2269, #2763)
• XPCOM/Main: fixed synchronization bug caused by SYSV semaphore key collisions
• ATA: fixed deadlock when pausing VM due to problems with the virtual disk (e.g. disk full, iSCSI target unavailable)
• iSCSI: fixed possible crash when pausing the VM
• iSCSI: fix PDU validity checking and detect final PDU reliably
• VBoxHeadless: really don’t start X11 services (clipboard service, 3D acceleration; Solaris & Darwin hosts only; bug #3199)
• Networking: fixed issue where a VM could lose connectivity after a reboot
• Linux hosts: fixed occasional kernel oopses (bug #2556)
• Solaris hosts: fixed high CPU load while running many guests in parallel
• Solaris hosts: fixed inability to start more than 128 VMs
• Solaris/Web services: fixed SMF script to set home directory correctly
• Linux Additions: fixed occasional file corruption when writing files in O_APPEND mode to a shared folder (bug #2844)