Another idea to test:

#ifdef 1
		DLOG("==== ApproximateChar " << ch << " " << (char)ch << " " << fnt << ", tolerance: " << tolerance);
		DDUMP(ValueTo< Vector<float> >(v));
		GlyphPainter chp;
		chp.move = chp.pos = Null;
		chp.tolerance = tolerance;
		GetGlyphInfo(fnt, ch);
//		GetWin32Font(fnt, 0);
//		PaintCharacter(chp, Pointf(0, 0), ch, fnt);
		DDUMP(chp.glyph);
		ASSERT(ValueTo< Vector<float> >(v) == chp.glyph);
#endif

Does this fix the issue? (GetGlyphInfo is another caching function called from PaintCharacter).

Mirek