Problem with internet connectivity (broken connections I think)

Discussion in 'Networking & Internet' started by ashraf_sabry_m, Aug 19, 2008.

  1. ashraf_sabry_m


    Aug 19, 2008
    Likes Received:

    I've been running Windows Vista home premium on my PC for a long time, and I'm connected to the internet through an ADSL line.

    The PC is connected to the ADSL router through a direct ethernet connection, and every thing was going great.

    Recently, my internet connection started to suffer a terrible performance degradation, It's not something related to connection speed, but it was that when I open a web page, the HTML page is displayed but most of the images and other content are not downloaded, sometimes the entire page is not loaded, and the problem occurs on all the web browsers I used.

    Using an HTTP monitoring tool, I found out that the requests for the images end with error or time out status.

    I suspected the physical connection, so I changed the ADSL splitter, and fixed the phone wires, but the problem still occurs.

    I have Virtual PC installed on my Vista OS, when I run a Windows XP image on Virtual PC, I find that the internet connection performs very well in the virtually running OS, and the web pages are fully displayed within the usual time periods, meaning that the problem is not of the ADSL router, the network card driver nor the ADSL line.

    I also tried to connect to the router through USB, but the problem still there.

    I have Windows Updates turned on, and I blindly install the downloaded updates, which makes me suspect that one of these updates has corrupted my tcp/ip protocol stack driver.

    I feel that the problem is caused of some kind of restrictions made on the number of concurrent tcp connections a browser can made, or else why direct file download works with the full 256 Kbps line speed while web page loading (which involves many connections) suffers bad performance?

    I think that the problem is complicated, and I don't remember which update may be causing the problem, I just hope that one of the forum members will provide me with a point to start from because I have no idea what's causing this behaviour.

    Thank you for your help.
    ashraf_sabry_m, Aug 19, 2008
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