3 computers networked, 1 VERY slow up and down!

I have 3 computers networked, via cable modem and WRT54G Ver. 5 wireless router.  The "primary" computer is XP which is hardwired, number 2 is XP, wireless, number three is running ME, and is hardwired.  Number "3" is ridiculously slow downloads and uploads.  This is a recent occurance, I just relocated (moved 10 miles)...the ONLY thing that has changed is my ISP (earthlink) and the new cable co. which is now Time Warner.  I had NO problems previously with connect speeds on any of the three computers.  I have just run the set ups for the router with the linksys info on this site to no avail.  When I take the computer (number 3) out of the router loop and go direct to the cable modem, ALL is well and I get typical cable download/upload speeds.  I suspect the router???BUT I am unsure at this point of what is going on?????  Ideas anyone?????

you can actually try forcing the ethernet card of your ME to 10 half duplex. Sometimes,when a computer is behind the router,especially if it's a windows ME, the trasmission of packets over ethernet connection will slow because of the NAT firewall built-in to the router. And because the router is precedent to the modem, then the transmission of packets coming originally from the modem will be slow down.
On the router's side, you can try lowering the MTU to 1400 or even lwer to 1300. This will adjust the packet transmission. The packet transmission will slow down but the tramission will be stable, thus making your ME download/upload speed more faster.
You can also try this option, try updating the firmware of your wrt54g v5 to firmware v. 1.01.0.
Or you could also try enabling the QoS option of your wrt54g v5 found under the APPLICATIONS AND GAMING TAB. try prioritizing the port # to wherever your ME is connected to, so that the bandwidth of the computer will get more bandwidth, since your other computer is already working fine and fast...
"a helping hand in a community makes the world a universe"

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    I have strange issues with my RV 120W, which I bought after the recommendations from a Cisco/Linksys pre-sales support. I'm using this unit for SOHO environment with two clients (computers) connected and a few mobile clients. Nothing special and nothing complex. I replaced my WRT610N router with this one on behalf of the VPN features, the RV 120W offers.
    Before initial setup I upgraded firmware to it's latest (1.0.1.3).
    The issues I'm having with this thing are:
    - very slow WLAN performance. And I mean - very, very slow. After doing some analysis I'm having a drop from 10Mbit/s to a stable speed of only a few houndrets of kilos per second. Even less. An average, constant speed test show no more than 50-80 kB/s. And I have a 20/20Mbit link.
    - very slow WAN - LAN performance. Although not as slow as WLAN, even LAN is somehow slow with an average throughput from WAN to LAN show no more than 15Mbit/s.
    - WAN IP address - host cannot be reached. After setting up the router to be able to echo the PING and be remotely managed, I can achive both services JUST for about 20 seconds after the unit reboots. After those 20 seconds, remote management sessions are timed out and the host is unreachable. But If I reboot the router again, I get it to work again - for no more than 20 seconds.
    As this is my first (more) professional router, I'm not really sure if I've got my VPN setup correctly. I cannot get it my VPN to work either and I can't tell if these issues are related.
    Any help would be appriciated.
    Thanks

    Hey Juka,
    Sorry your having issues with the rv120w.
    I seen that you upgraded the firmware on the rv120w when you got it.  I always do a factory reset of the device when upgrading the firmware.  I will first backup my configs, factory reset the device, then reload the configs. 
    Try that since you did do a firmware upgrade to see if the device speeds up for you.
    The wireless issues you were describing, I would do a wireless scan using a wireless analysis software like INSSIDER or something like it, that way you can see the wireless channels that are being used and set your router manually to a channel that has no or the least congestion.
    Try this and let us know what you get.

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