A patch for the excellent UPaint program included with the retail version of Unreal Tournament 2003, created by Right Hemisphere is available and is titled UPaint 1.0.1. It addresses the following issues:

Fixed an alpha bug with Face Projection caused feathered mask areas to become transparent.
Fixed a memory leak in the renderer - caused performance loss over time.
Right-click will now cancel the polygonal selection tool.

Download UT2003 UPaint Update