Updated VirtualBox to Versoin 4.1.6 from 4.1.4

Today VirtualBox 4.1.6 is realeased. Here is the changelog.

Installation was done without problems. The start of my Win XP instance and
the update of the Guest Additions were no problems.

The instance is running.

The VirtualBox Manager can only be started by setting LD_NODIRECT=1, but the Preferences Dialog causes a core dump.

The extension pack can be installed via the commandline:

[ewer@solewer:~/tmp]$/opt/VirtualBox/VBoxManage extpack install --replace ../Downloads/Oracle_VM_VirtualBox_Extension_Pack-4.1.6-74713.vbox-extpack
0%...10%...20%...30%...40%...50%...60%...70%...80%...90%...100%
Successfully installed "Oracle VM VirtualBox Extension Pack".

The Settings of the VM can be viewed.