boa single connection per client

I am running boa version 0.94 (from the README) or 0.93.16 (highest rev in Changelog). I am have troubles with client requests timing out and causing retransmissions that result in slow performance. The symptom is that boa fails to ACK a GET request. When i look into boa, it is only handling one request at a time. If requests come in concurrently and the requested files are sizeable (images), requests get dropped between the TCP layer and boa. Does anybody have any idea what the problem is? Here is my boa.conf file:

ServerName uClinux

DocumentRoot /home/httpd

ScriptAlias /cgi-bin/ /home/httpd/cgi-bin/

Alias /images /home/httpd/images# Auth /cgi-bin/cgi_demo /etc/config/config

KeepAliveMax 3000

KeepAliveTimeout 3

AddType application/x-httpd-cgi cgi

AddType application/x-httpd-cgi cgi

AddType application/postscript ps

AddType application/postscript eps

AddType application/pgp pgp

AddType audio/x-aiff aif

AddType audio/x-aiff aifc

AddType audio/x-aiff aiff

AddType text/plain asc

AddType text/plain txt

AddType audio/ulaw au

AddType video/x-msvideo avi

AddType application/x-bcpio bcpio

AddType application/octet-stream bin

AddType application/x-netcdf cdf

AddType application/x-cpio cpio

AddType application/x-csh csh

AddType application/x-dvi dvi

AddType text/x-setext etx

AddType application/andrew-inset ez

AddType image/gif gif

AddType application/x-gtar gtar

AddType application/x-gunzip gz

AddType application/x-hdf hdf

AddType text/html html

AddType image/ief ief

AddType image/jpeg jpe

AddType image/jpeg jpeg

AddType image/jpeg jpg

AddType application/x-latex latex

AddType application/x-troff-man man

AddType application/x-troff-me me

AddType application/x-mif mif

AddType video/quicktime mov

AddType video/quicktime qt

AddType video/x-sgi-movie movie

AddType video/mpeg mp2

AddType video/mpeg mpe

AddType video/mpeg mpeg

AddType video/mpeg mpg

AddType application/x-troff-ms ms

AddType application/x-netcdf nc

AddType application/oda oda

AddType image/x-portable-bitmap pbm

AddType application/pdf pdf

AddType image/x-portable-graymap pgm

AddType application/x-chess-pgn pgn

AddType image/x-portable-anymap pnm

AddType image/x-portable-pixmap ppm

AddType application/postscript ps

AddType image/x-cmu-raster ras

AddType image/x-rgb rgb

AddType application/x-troff roff

AddType application/rtf rtf

AddType text/richtext rtx

AddType application/x-sh sh

AddType application/x-shar shar

AddType audio/basic snd

AddType application/x-wais-source src

AddType application/x-sv4cpio sv4cpio

AddType application/x-sv4crc sv4crc

AddType application/x-troff t

AddType application/x-troff tr

AddType application/x-tar tar

AddType application/x-tcl tcl

AddType application/x-tex tex

AddType application/x-texinfo texi

AddType application/x-texinfo texinfo

AddType image/tiff tif

AddType image/tiff tiff

AddType text/tab-separated-values tsv

AddType application/x-ustar ustar

AddType audio/x-wav wav

AddType image/x-xbitmap xbm

AddType image/x-xpixmap xpm

AddType image/x-xwindowdump xwd

AddType application/zip zip

AddType text/css css