Description of problem:
When clicking a folder, nautilus crashes

$ cat ~/.xsession-errors
[...]
nautilus: symbol lookup error:
/usr/lib/nautilus/extensions-2.0/libnautilus-burn-extension.so: undefined
symbol: nautilus_file_info_get_vfs_file_info
Initializing nautilus-flac-converter extension
Initializing nautilus-open-terminal extension
Initializing nautilus-image-converter extension

$ ldd -r /usr/lib/nautilus/extensions-2.0/libnautilus-burn-extension.so 
[...]	
undefined symbol: nautilus_file_info_get_volume
(/usr/lib/nautilus/extensions-2.0/libnautilus-burn-extension.so)
undefined symbol: nautilus_file_info_get_drive
(/usr/lib/nautilus/extensions-2.0/libnautilus-burn-extension.so)
undefined symbol: nautilus_file_info_get_vfs_file_info
(/usr/lib/nautilus/extensions-2.0/libnautilus-burn-extension.so)

Version-Release number of selected component (if applicable):
2.20.0-5.fc9

How reproducible:
always

Steps to Reproduce:
1. click a folder
2. 
3.
  
Actual results:


Expected results:


Additional info:
nautilus-2.21.5-1.fc9
gnome-vfs2-2.20.1-4.fc9
gvfs-0.1.2-1.fc9
glib2-2.15.2-1.fc9

This doesn't happen in nautilus-cd-burner-2.20.0-1.fc8.