http://maemo.org/packages/view/gcc-4.6/
gets empty (IIRC)

Discussion about this and problems with it:
http://talk.maemo.org/showthread.php?t=81861

tl;dr As autobuilder uses gcc 4.2 this is somehow banned

Also to answer your post, his 4.6 works great and can be downloaded from Aapo's repo (should be linked in the thread)