This is the same executable as is available directly from stuffit.com which segmentation faults when extracting files from the archive.
It works fine for me on FC2, try the following: (If you don't have lftpget, use wget)
lftpget ftp://ftp.pbone.net/mirror/ftp.redhat.com/pub/contrib/libc5/SRPMS/stuffit-5.2.0.611-5.src.rpm
rpmbuild --rebuild stuffit-5.2.0.611-5.src.rpm
cd /usr/src/redhat/RPMS/i386/
rpm -ivh stuffit-5.2.0.611-5.i386.rpm
lftpget http://www.firewalldesign.com/sderman/ClipCommControl/ClipCommControl1.10.dmg.sit
unstuff ClipCommControl1.10.dmg.sit
ls -al ClipCommControl1.10.dmg
-rw-r--r-- 1 root root 2304799 Jul 16 13:21 ClipCommControl1.10.dmg
No issues here!
