Hi guys!

I don't know if you already tested this idea; it saved my latest pic (see link) which was impossible to render in a normal way (due to some unknown problem the rendertime on the final render/low AA settings skyrocketed to over 160 hours) so I did the following: I set the render to "Preview" and the size to about 2500 x 2XXX pixel instead of 800x600 with normal AA.

http://www.renderosity.com/mod/gallery/index.php?image_id=1247153

When the rendering was finished after 1,5 hours, I opened the the large pic and resized to a smaller format (back to 800 pix.); to my amazement the image was almost perfectly antialiased after resizing!

It seems to be an effective way to dramatically cut down rendertimes and still obtain an antialiased pic.