First of all (just so you know) the code is using a Bourne Shell heredoc. Not a perl heredoc.
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I don't see any problem with the code. I ran the following (on Fedora 6):
The output looked fine:
#! /usr/bin/perl -w
my @result = `sh << EOF;
The ps output looks fine.
$VAR1 = [
'Thu Apr 3 12:27:32 MDT 2008
Have you tried running the command from a shell yourself? I suspect the ssmcons program is hanging. Maybe 192.168.2.114 is not responding or closing the connection.
6204 pts/1 S+ 0:00 sh -c sh << EOF;?pwd;?sleep 10;?date;?EOF