Epic's Erik de Neve has released a new version of the beta Direct3D patch for Unreal Tournament on the Unreal Technology site. Here is the update:

This second incarnation of the beta now draws double sided actor polygons correctly - i.e. fixes the mysterious disappearance of the CTF flags! ;-)

As before, to install you need to backup the d3ddrv.dll that is in your UT system folder and replace it with the new file.