Open ncftp to a site, login, lls, when you type `lls' it causes the screen to not echo commands back to you, upon exiting ncftp the terminal is also the same, requires you to type `reset' to recover. This is a reproducible problem. This occurs on both my sparc and intel, probably alpha as well.
will be fixed in the next kernel and or glibc release. It's a problem with popen() & vfork().
Workaround: Downgrade to ncftp from Red Hat 5.2 (do rpm --rebuild on the .srpm first).