Nautilus crashes when accessing some folders
Solution 1:
Removing nautilus-open-terminal fixed it for me. None of the Ubuntu One client stuff above helped for me, but removing nautilus-open-terminal definitely did. Nautilus now opens, and it seems to open slightly quicker.
With nautilus-open-terminal installed, if I launched nautilus from terminal, I would get a number of segmentation faults, and nautilus would either not open, or it would open then close after browsing a few folders.
After reading a comment in that forum BruceBerry mentioned above, about removing nautilus-open-terminal, the terminal now can just open nautilus with absolutely no error messages and I have Ubuntu One file syncing just fine.
Solution 2:
what i did was;
sudo apt-get purge nautilus-open-terminal
and now everything is just fine! I love the new distro!