slow transfer speed and ftp issues

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CURL-LOADER VERSION: 0.52, June 13, 2010

HW DETAILS: CPU/S and memory are must:
Curl-loader Client - 
CPU - Pentium 4 3 GHz dual core
MemTotal:        2056632 kB
MemFree:         1923788 kB

Server -
CPU - Pentium 4 3 GHz dual core 
MemTotal:        4059056 kB
MemFree:         3063160 kB

LINUX DISTRIBUTION and KERNEL (uname -r): 2.6.32-21-server

GCC VERSION (gcc -v): 4.4.3 (Ubuntu 4.4.3-4ubuntu5

COMPILATION AND MAKING OPTIONS (if defaults changed): opimization on/debug off

COMMAND-LINE: curl-loader -f ./conf-examples/NAVL-ftp.conf

CONFIGURATION-FILE (The most common source of problems):
Place the file inline here:
########### GENERAL SECTION ################################
BATCH_NAME= ftp
CLIENTS_NUM_MAX=100
INTERFACE   = eth1
NETMASK=255.255.0.0
#IP_SHARED_NUM = 1
IP_ADDR_MIN= 10.0.0.1
IP_ADDR_MAX= 10.0.100.253  #Actually - this is for self-control
CYCLES_NUM= -1
URLS_NUM = 1

########### URL SECTION ####################################

#URL=ftp://tester:tester@10.0.10.52/100k-random.html
URL=ftp://tester:tester@10.0.0.101/100k-random.html
#URL=ftp://tester:tester@10.0.10.52/curl-loader-0.52.tar.gz
FRESH_CONNECT=1                                  # At least my proftpd has problems with connection re-use
TIMER_URL_COMPLETION = 0 # In msec. When positive, Now it is enforced by cancelling url fetch on timeout
TIMER_AFTER_URL_SLEEP =3000
FTP_ACTIVE=1

DOES THE PROBLEM AFFECT:
       COMPILATION? No
       LINKING? No
       EXECUTION? YES
       OTHER (please specify)?
Have you run $make cleanall  prior to $make ?

DESCRIPTION:
1. I can do regular ftp and wget using that ftp command, it just won't work using this config file.  This config file was working when i used a 24 bit netmask and 10.0.10.52 as the server.  Now I want to test more hosts and would like to use 16 bit netmask.  My ifconfig on client and apache is the following:
Client - eth1      Link encap:Ethernet  HWaddr xxx
          inet addr:10.10.10.75  Bcast:10.10.255.255  Mask:255.255.0.0
Server - eth1      Link encap:Ethernet  HWaddr xxx
          inet addr:10.10.10.52  Bcast:10.10.255.255  Mask:255.255.0.0

2. When i use the linux ftp client to transfer the 100k file once i get 484.8 Mib/sec.  When i use curl-loader to ftp the same file with 1 FTP client i get 0.02971 Mib/sec.  What is the cause?  Does curl-loader not calculate the Ti the same way the native ftp client does?
The slow down is also seen in getting html files from my apache server. I should be able to get close to line rate grabbing one 100K file with 10 Concurrent clients, but curl-loader can only get up to 276.8 Mib/sec.

QUESTION/ SUGGESTION/ PATCH:
Can you please enlighten me as to why my ftp config file is not working?
Why can i not get close to line rate with either ftp or http?  I tried with -r and -t with no luck.