Traffic Shaping

I have implemented traffic shaping on my 20/2 cable internet connection.  I'm running monowall on a dell pc with plenty of cpu and memory.  I have 3 pcs hooked to a switch which connects to the dell.  I run a ftp server on 1 machine that is pretty much maxed upload all the time.  My shaping is set as follows:

Pipe:
1    1800 Kbit/s                        outbound pipe

Ques:
1   outbound pipe    99         high speed
2   outbound pipe    1         low speed 

Rules:
WAN    TCP   *   Port: 80 (HTTP)   *   Port: 80 (HTTP)   high speed    http        
   
WAN    TCP   *   Port: 53 (DNS)   *      Port: 53 (DNS)   high speed    DNS        
   
WAN    TCP   *      Port: 25 (SMTP)   *      Port: 25 (SMTP)   high speed    SMTP        
   
WAN    TCP   *   Port: 2244   *   Port: 2244   high speed    SSH2244        
   
WAN    TCP   *   Port: 443 (HTTPS)   * Port: 443 (HTTPS)   high speed    HTTPS        
   
WAN    TCP   *   Port: 143 (IMAP)   * Port: 143 (IMAP)   high speed    IMAP        
   
WAN    TCP   *   Port: 110 (POP3)   * Port: 110 (POP3)   high speed    POP3        
   
WAN    ICMP   *   *   high speed    PING        
   
WAN    TCP   *   *   high speed    ACK        
   
WAN    TCP   192.168.1.102   Port: 50000 - 50300   * Port: 50000 - 50300   low speed    ftp passive ports        
   
WAN    *   *   *   high speed    EVERYTHING

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The shaper is working, ftp traffic goes into the low speed ques just fine.  Http traffic and everything important is in the high speed que.  The problem is that web surfing is still pretty sluggish.  No were near like without shaping, but enough to be frustrating.  Is there anything else i can do here?  I want no slow down on my htttp surfing whatsoever.

Have you test measured your outgoing bandwidth?  It may not be quite up to the 2mbit, which would require you to make that 1800kbit pipe a little smaller to see more of an effect..