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ot: not debian specific. embedded linux network problems

hi all,

i've a dlink dsl504T, a dsl router with linux embedded:
# cat /proc/version
Linux version 2.4.17_mvl21-malta-mips_fp_le (victor@localhost.localdomain) 
(gcc version 2.95.3 20010315 (release/MontaVista)) #62 ¶g¤@ 4¤ë 4 23:04:57 
CST 2005

i've rised ip_conntrack_max because default was 512
# cat /proc/sys/net/ipv4/netfilter/ip_conntrack_max

but after a while of using p2p (mldonkey) it seems it can't handle more 
connections ... even it takes a while to connect to it by telnet ...

i don't know how to count the number of stablished connections because it uses 
BusyBox v0.61.pre (2005.04.04-15:09+0000) and it doesn't have netstat neither 
wc :-/

i've take a look at /proc/net/ip_conntrack and i can see this: (a few lines)
tcp      6 205962 ESTABLISHED src= dst= sport=1985 
dport=4662 [UNREPLIED] src= dst= sport=4662 
dport=1985 [ASSURED] use=1
tcp      6 30576 CLOSE_WAIT src= dst= sport=16451 
dport=4662 src= dst= sport=4662 dport=16451 [ASSURED] 
tcp      6 24789 CLOSE_WAIT src= dst= sport=1530 
dport=4662 src= dst= sport=4662 dport=1530 [ASSURED] 
tcp      6 188615 ESTABLISHED src= dst= sport=4662 
dport=1434 [UNREPLIED] src= dst= sport=1434 
dport=4662 [ASSURED] use=1

as far as i know, an assured connection can't be unreplied, true ?

do you know what's the problem ? i don't think is a memory issue because:

# free
              total         used         free       shared      buffers
  Mem:         6560         6072          488            0          232
 Swap:            0            0            0
Total:         6560         6072          488

if you need more information about rules, modules loaded or anything, ask for 

thanks in advance !
Jorge Salamero Sanz (bencer)
mail: <bencer@cauterized.net>
blog: <http://bys.cauterized.net/>
http: <http://www.cauterized.net/>

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