I'm still in the 20th century, but making progress.
SunOS Release 5.7 Version Generic_106541-08 [UNIX(R) System V Release 4.0]
Copyright (c) 1983-1999, Sun Microsystems, Inc.
# uname -a
SunOS 5.7 Generic_106541-08 sun4m sparc SUNW,SPARCstation-5
# ls -l /
drwxr-xr-x 2 root sys 512 Oct 15 1999 a
The next stop is going to be 21 century. But going to look at the performance problems first. Waiting 6 hours for the '#' is a bit boring (and the problem is definitely not the CPU speed).
Thanks to Sergey Dionidis (a.k.a sdio @ LOR) for helping to test it.