There's a fix for problem here:
http://bugzilla.gnome.org/show_bug.cgi?id=138986
Just do the following (as root):
- download the patch attached to the bug report
- copy the patch file to /usr/src/redhat/SOURCES
- Install the source package ORBit2-2.10.0-2.src.rpm
- cd /usr/src/redhat/SOURCES
- tar -xvjf ORBit2-2.10.0.tar.bz2
- patch -p0 <ORBit2-2.10.0.1-cbl-nautilus-crasher-fix.patch
- tar -cvjf ORBit2-2.10.0.tar.bz2 ORBit2-2.10.0
- cd ../SPECS
- rpmbuild -bb ORBit2.spec
- rpm -Uvh --force ../RPMS/x86_64/ORBit2-2.10.0-2.x86_64.rpm
- now restart nautilus... no more crashes :-)