Memprof.trace produces 0 object counts about memprof HOT 6 CLOSED

Memprof.trace{ 10.times{ GC.start } }

$memprof --info
Memprof Uploader
http://www.memprof.com
======================

ruby 1.8.7 (2009-12-24 patchlevel 248) [x86_64-linux], MBARI 0x6770, Ruby Enterprise Edition 2010.01
CFLAGS='-g -O2   ' ./configure  '--prefix=/usr/local/ruby-enterprise-1.8.7-2010.01' '--enable-mbari-api' 'CFLAGS=-g -O2 '
/usr/local/ruby-enterprise-1.8.7-2010.01/bin/ruby: ELF 64-bit LSB executable, AMD x86-64, version 1 (SYSV), for GNU/Linux 2.6.9, dynamically linked (uses shared libs), for GNU/Linux 2.6.9, not stripped
        libtcmalloc_minimal.so.0 => /usr/local/ruby-enterprise-1.8.7-2010.01/lib/libtcmalloc_minimal.so.0 (0x00002aaaaacc8000)
        librt.so.1 => /lib64/librt.so.1 (0x00002aaaaaf1a000)
        libdl.so.2 => /lib64/libdl.so.2 (0x00002aaaab123000)
        libcrypt.so.1 => /lib64/libcrypt.so.1 (0x00002aaaab328000)
        libm.so.6 => /lib64/libm.so.6 (0x00002aaaab560000)
        libc.so.6 => /lib64/libc.so.6 (0x00002aaaab7e3000)
        libstdc++.so.6 => /usr/lib64/libstdc++.so.6 (0x00002aaaabb3b000)
        libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x00002aaaabe3b000)
        libpthread.so.0 => /lib64/libpthread.so.0 (0x00002aaaac049000)
        /lib64/ld-linux-x86-64.so.2 (0x00002aaaaaaab000)

irb(main):002:0> Memprof.trace{ 10.times{ GC.start } }
{
  "memcache": {

  },
  "mysql": {

  },
  "fd": {

  },
  "objects": {
    "created": 11,
    "types": {
      "varmap": 11
    }
  },
  "gc": {
    "calls": 10,
    "time": 0.092604
  },
  "memory": {
    "free": {
      "calls": 85413,
      "actual": 7756144
    }
  }
}

ruby -rubygems -e' require "memprof"; Memprof.trace{ 10.times{Object.new} } '

ruby -rubygems -e' require "memprof"; Memprof.start; Memprof.trace{ 10.times{Object.new} } '