My Linksys router drops download speed if I use ESET NOD32 Antivirus

Discussion in 'ESET NOD32 Antivirus' started by solo11, Jan 8, 2010.

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  1. solo11

    solo11 Registered Member

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    Linksys router drops download speed if I use ESET NOD32 Antivirus - [SOLVED]

    My PC: Pentium4, Windows XP SP3 Home Edition.

    D-Link dsl modem, Linksys router WRT110

    DSL download speed 15 Megabits/sec.



    WLAN turned off.

    One PC connected to the router.





    Without the router and with NOD32 Antivirus installed on my PC:

    Download speed is 15 Megabits/sec.








    With the router and with NOD32 installed on my PC:

    Download speed drops down to 2 Megabits/sec.


    If I uninstall NOD32, everything is OK,

    the download speed is 15 Megabits/sec again

    (with or without the router).





    What should I do?




    EDIT:


     
    Last edited: Jan 13, 2010
  2. Rmuffler

    Rmuffler Former Eset Moderator

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    Hello solo11,

    Are you connecting wirelessly to your router or is it a direct connection with an ethernet cable? If you are connecting wirelessly, are you using software to do that or the default Window's drivers?

    Thank you,
    Richard
     
  3. siljaline

    siljaline Former Poster

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    Check with D-Link and ensure you have the latest firmware since your model has been the subject of some exploits of late, do that and see if your issue persists.
     
  4. solo11

    solo11 Registered Member

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    only one PC and direct connection with an ethernet cable


    I've just tested my uTorrent application.
    It works well. Its download speed is 1.4 MB/s = 11.2 Megabits/sec


    Something between my browsers (FF3.5.7 or IE:cool: and NOD32

    or something with the router?
     
    Last edited: Jan 9, 2010
  5. solo11

    solo11 Registered Member

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    If I use my other PC with Core2Duo CPU and with Windows 7,

    everything works well. Download speed is 15 Megabits/sec.

    So, I think it is other problem.
     
    Last edited: Jan 9, 2010
  6. solo11

    solo11 Registered Member

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    JDownloader application


    If I watch it in full view
    download speed drops to

    600 KB/s = 4.8 Megabits/sec



    If I put down JDownloader to the system tray
    download speed jumps to

    1.8 MB/s = 14.4 Megabits/sec
     
    Last edited: Jan 9, 2010
  7. solo11

    solo11 Registered Member

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    I connected only one PC to the router with an ethernet cable
    and turned off the wireless connection during the tests.

    The tests were performed several times. But I got the same results.



    ***xxxxxxxxxxxxxxxxxxxxx*** means that I didn't use the thing




    [NOD32 uninstalled]

    (Internet) --- D-Link DSL-360R ADSL2+ modem --- ***xxxxxxxxxxxxxxxxxxxxx*** ---
    --- ethernet cable --- Pentium4 PC --- Windows XP Home Edition SP3 ---
    --- ***xxxxxxxxxxxxxxx*** --- Firefox (or IE:cool: --- DOWNLOAD SPEED - look at these pictures:
    http://www.abload.de/img/no_nod32_installed__div0hc.jpg
    http://www.abload.de/img/no_nod32_installed__di743o.jpg


    (Internet) --- D-Link DSL-360R ADSL2+ modem --- ***Linksys WRT110 Router*** ---
    --- ethernet cable --- Pentium4 PC --- Windows XP Home Edition SP3 ---
    --- ***xxxxxxxxxxxxxxx*** --- Firefox (or IE:cool: --- DOWNLOAD SPEED - look at these pictures:
    http://www.abload.de/img/no_nod32_installed__cow0db.jpg
    http://www.abload.de/img/no_nod32_installed__coh2rj.jpg



    [NOD32 INSTALLED]

    (Internet) --- D-Link DSL-360R ADSL2+ modem --- ***xxxxxxxxxxxxxxxxxxxxx*** ---
    --- ethernet cable --- Pentium4 PC --- Windows XP Home Edition SP3 ---
    --- ***NOD32 Antivirus*** --- Firefox (or IE:cool: --- DOWNLOAD SPEED - look at these pictures:
    http://www.abload.de/img/with_nod32_installed__e45h.jpg
    http://www.abload.de/img/with_nod32_installed__w0gi.jpg - strange speedtest.net results, always


    (Internet) --- D-Link DSL-360R ADSL2+ modem --- ***Linksys WRT110 Router*** ---
    --- ethernet cable --- Pentium4 PC --- Windows XP Home Edition SP3 ---
    --- ***NOD32 Antivirus*** --- Firefox (or IE:cool: --- DOWNLOAD SPEED - look at these pictures:
    http://www.abload.de/img/with_nod32_installed__d1i4.jpg - drastic download speed slow down
    http://www.abload.de/img/with_nod32_installed__g0ds.jpg - drastic download speed slow down





    Upload speed is OK in all the four case.

    .
     
    Last edited: Jan 9, 2010
  8. siljaline

    siljaline Former Poster

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    That doesn't state that you contacted Linksys/Cisco or D-Link It would behoove you to do so as I think you have a Router/Modem issue that has nothing to do with your ESET Product.
    You are likely "barking up the wrong tree", as it were.
     
  9. solo11

    solo11 Registered Member

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    But why are Linksys router and D-Link ADSL2+ modem working well together
    if I uninstall the NOD32 Antivirus?

    uTorrent is also working well if the NOD32 Antivirus is either installed or uninstalled.

    Upload speed is also OK if the NOD32 Antivirus is either installed or uninstalled.


    But why slows down NOD32 the download speed of my browsers on WinXP
    if I use the router?


    .
     
  10. siljaline

    siljaline Former Poster

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    You are asking questions based on what we would like you to do first.
    What, in my opinion, needs to be done next is to absolutely determine that your Router/Modem set-up are working correctly !
    Until this is done and we have answers from you that this has been accomplished with some certainty, I cannot help your further.
    I have worked on similar machines with similar if not same software without issue.
     
  11. solo11

    solo11 Registered Member

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    I've posted this also there:

    WRT110 drops download speed if I use ESET NOD32 Antivirus
    http://forums.linksysbycisco.com/linksys/board/message?board.id=Wireless_Routers&thread.id=162448


    .
     
  12. siljaline

    siljaline Former Poster

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  13. solo11

    solo11 Registered Member

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  14. siljaline

    siljaline Former Poster

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    Last edited: Jan 9, 2010
  15. solo11

    solo11 Registered Member

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    Slow or no Internet/network/printer connection: Solution checklist
    http://kb.eset.com/esetkb/index?page=content&id=SOLN2217

    Adjust Protocol filtering settings to prevent computer disruptions due to network traffic scanning (4.0)
    http://kb.eset.com/esetkb/index?page=content&id=SOLN2132

    done

    I put check signs only before the browsers.


    I removed check signs before java, msn, svchost.

    JDownloader (uses JAVA) works as usual, download speed approximately OK.

    But the browsers not, in Firefox speedtest.net gives only 1 Mbps from 15 Mbps.

    --

    EDIT:
    -
     
    Last edited: Jan 12, 2010
  16. solo11

    solo11 Registered Member

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    After a week, my Core2Duo PC with Windows 7, Firefox and NOD32

    also begins to slow down:

    The download speed is between 1 and 5 Mbps from 15 Mbps

    very rarely 10 Mbps

    according to speedtest.net.

    My PC and Linksys router wirelessly connected.



    Although when I firstly installed NOD32 on Win7
    the download speed was 15 Mbps
    every time I measured it.
     
  17. siljaline

    siljaline Former Poster

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    solo11 I am remiss in assisting you further with your issue as you have not, repeatedly, provided the requested information in this thread.
    Without this, I cannot help you. I leave this to others that may want to help.
    It is not that we cannot help you, we cannot without more from you.

    Good luck.
     
  18. Triple Helix

    Triple Helix Webroot Product Advisor

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    It could be your ISP I know from time to time my speeds are not where they should be doesn't mean it's an ESET NOD32 problem!

    TH
     
  19. solo11

    solo11 Registered Member

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    From where should I know this.

    My modem is only a box.



    And my ISP is OK.
     
  20. solo11

    solo11 Registered Member

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    Slow internet connection, NOD32 Antivirus, download speed is OK again - SOLVED!!



    Internet(ISP) -- D-Link DSR-360R ADSL2+ modem --

    -- Linksys WRT110 router - ethernet cable connection --

    -- Realtek integrated network card - Pentium4 PC --

    -- WinXP Home SP3 - NOD32 Antivirus - Firefox browser


    From 15 Mbit/s download speed I can get only 1 Mbit/s

    I've found a solution to this problem:





    I experience this when WinXP is booting:

    My NOD32 starts slowly, it takes about 1 min 35 sec, meantime everything is frozen in the screen:
    http://www.abload.de/img/boot_photom4f6.jpg




    And NOD32 does also this:

    This is how my system tray should like after installing and using NOD32
    if I connect directly to the internet.
    But this is a rare occasion:
    http://www.abload.de/img/alloftheiconsdisplayeddo2f.jpg

    Namely, my network card icon quite often disappears if I have NOD32 installed on my PC.
    It works, but somehow it doesn't appear on the system tray:
    http://www.abload.de/img/network_icon_doesnt_ap3scz.jpg

    And it also happens that the NOD32 icon doesn't appear on the system tray,
    but it works in the background, and catches the virus if find one.
    http://www.abload.de/img/nod32_and_network_iconxraq.jpg



    So, can this be a problem: NOD32 and my network card are disturbing each othero_O??




    I did a Google search: nod32 slow internet

    found this:
    https://www.wilderssecurity.com/showthread.php?t=140298&page=3

    #58 gave me an idea

    Has really my integrated network card some problem?

    (Realtek RTL8139/810X Family Fast Ethernet NIC)


    That's why I did the followings:

    0. I installed and set up my Linksys router.

    1. I installed NOD32 and re-booted PC,

    2. uninstalled the driver of my network card,

    3. I took the original CD I had got to my mother board

    and I re-installed the driver of my integrated network card from this CD disk, and re-booted PC


    (something tcpip.sys was installed during the process - as my firewall displayed it)


    And voilá. My download speed is like never before. It works perfectly.




    Speedtest.net site measures still stupid results if NOD32 is installed,

    but who cares. The download speed is OK: 10-15 Mbit/s

    Even if I connect to the internet through the router!!!



    And what is more, it looks like my PC is a little bit faster than before.





    After re-installing the LAN driver of my integrated network card I measured this datas:

    NOD32, direct adsl connection:
    http://www.abload.de/img/xpsp3_direct_adsl_nod3m19c.jpg - stupid speedtest
    BUT
    http://www.abload.de/img/xpsp3_direct_adsl_nod3134f.jpg - perfect
    http://www.abload.de/img/xpsp3_direct_adsl_nod3d31q.jpg - perfect

    We can say, it is a good download speed, BUT speedtest results are wrong.



    NOD32, router connection:
    http://www.abload.de/img/xpsp3_router_nod32_firx4bx.jpg - stupid speedtest
    BUT
    http://www.abload.de/img/xpsp3_router_nod32__dif307.jpg - perfect
    http://www.abload.de/img/xpsp3_router_nod32_jdo33l8.jpg - perfect

    We can say, it is a good download speed, BUT speedtest results are wrong.






    When NOD32 is uninstalled and no antivirus is installed:


    No Antivirus, direct adsl connection:
    http://www.abload.de/img/xpsp3_direct_adsl_nod3q2ls.jpg



    No Antivirus, router connection:
    http://www.abload.de/img/xpsp3_router_nod32_unic4fq.jpg



    My download speed is OK now,

    but the slow startup hasn't changed.

    .
     
    Last edited: Jan 14, 2010
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