I am using the one from www.linux.org.za/filehandle.patch.linux
with linux 2.0.30
Screen version 3.07.03 (FAU) 23-Sep-96 (from redhat 3)
ldd /usr/bin/screen
libtermcap.so.2 => /lib/libtermcap.so.2.0.8
libc.so.5 => /lib/libc.so.5.4.17
or Screen version 3.06.02 (FAU) 4-Apr-95 (from jurix unknown)
ldd /usr/bin/screen
libncurses.so.3.0 => /lib/libncurses.so.3.0
libc.so.5 => /lib/libc.so.5
All work fine with the lock screen command.