(Doing that will probably fix your incompatability, but not mine.)
On a related but not the same note, I get, with procps-0.99a & 1.3.90:
Q:~$ ps axf
PID TTY STAT TIME COMMAND
Segmentation fault
^^^^^^^^^^^^^^^^^^
Q:~$ uname -a
Linux Q.Net 1.3.90 #37 Tue Apr 16 17:55:01 EDT 1996 i586
Q:~$ ps --version
procps version 0.99
[Huh? It's 0.99a!!]
Q:~$ ldd `which ps`
libproc.so.0.99 => /lib/libproc.so.0.99
[aha -- probably they don't want alpha vers#s in library names -- shoulda been 0.99.1]
libc.so.5 => /lib/libc.so.5.3.9
Q:~$
I really have come to love the -f option (it's useful for tracking
down things in a visually quick way, without having to read "PPID").