Can Symbian run on multicore-CPU-platforms, does it have a thread-safe code? I think not, neither does WP. Both are unusable for high end phones.

Because Elop and MS, Nokia is forbidden to bring quad-core Meego-device with the Pureview-camera. What a great decision from Elop and the general board, good job!
Nokia deserves to die and get the next Darwin award.