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Topic # 12136 1-Mar-2007 09:35
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hi everyone.

I use uTorrent quite a bit.  I find that when it's running i have trouble browsing the web using firefox or IE.  The symptoms are that when I open the browser i just get a blank page and at the bottom left it immediately says DONE.  If i try to get a page from my favourites or type a url the same thing happens.  If i stop utorrent or close it, and try again, I immediately get access to browsing again.  Anyone have any ideas about this?  I limit my upload/download bandwidth to about 200k up and 20k down - i have a 10Mbps pipe...

Cheers
Mike

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  Reply # 62430 1-Mar-2007 13:29

Windows XP SP2 introduced a limitation on the number of simultaneous TCP half-open (first SYN) connections your computer can make. This was apparently an effort to stop worms spreading but breaks most, if not all P2P apps such as bittorrent, frostwire, kceasy etc.

Install the tcpip.sys hack (I set the limit sky-high, no other OS has a limit as retarded as this) and your computer should operate properly again while running P2P apps.

http://www.lvllord.de/?lang=en&url=downloads#4226patch

let me know if this doesn't help!
-barf




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  Reply # 62431 1-Mar-2007 13:32
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Hi there,

Yip that's been done a long time ago, connections are at 50 now.
Thanks for the reply, but it's happening even with this hack installed.

 
 
 
 


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  Reply # 62432 1-Mar-2007 13:37

50 is too low. 150 is adequate for light P2P. my amule P2P client creates 5000+ connections simultaneously bittorrent is a little lower than this but you will want at least 200 even to run one torrent I would think.

if you installed it a long time ago, maybe the patch has somehow un-done itself?

that was my only suggestion sorry, hopefully someone else can help :-S

edit: could be your router possibly too. some most d-link models only have enough RAM to track 500-700 connections simultaneously.




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  Reply # 62433 1-Mar-2007 13:43
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hmm okay good point.  i did try reinstall the patch and yes, it still has 50 connections in the setup.  however i'll change this to around 500 connections.  utorrent is set to use up to 50 connections so maybe it was maxing it out and using them all up.  i'll set utorrent to use around 100 connections, that should leave 400 free for other apps, yeah?



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  Reply # 62435 1-Mar-2007 14:01
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hmm nope that didn't seem to do much. as soon as the torrent reaches 100+ kbps it freaks out the browser and all other network traffic comes to a standstill. i get really good torrent speeds though haha

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  Reply # 62436 1-Mar-2007 14:03

you shouldn't need to budget your TCP connections, set the tcpip.sys limit to the absolute maximum, a very long number the hack tells you what it is. it's like driving with the handbrake on otherwise.


edit: what type of router do you have? any antivirus programmes running?




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  Reply # 62437 1-Mar-2007 14:03
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I have no issues with this on Windows Vista. Can download a torrent at 300+ KB/sec with no effect on my browsing.



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  Reply # 62439 1-Mar-2007 14:05
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bradstewart: I have no issues with this on Windows Vista. Can download a torrent at 300+ KB/sec with no effect on my browsing.


how very helpful of you LOL
not being rude but can we keep this thread to a "try this" instead of a"mine works fine". 

90% of the time it works fine for me too.

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  Reply # 62441 1-Mar-2007 14:14
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can you access your router's web page while the problem occurs?

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  Reply # 62442 1-Mar-2007 14:21
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gehenna:
bradstewart: I have no issues with this on Windows Vista. Can download a torrent at 300+ KB/sec with no effect on my browsing.


how very helpful of you LOL
not being rude but can we keep this thread to a "try this" instead of a"mine works fine". 

90% of the time it works fine for me too.

Argh posted half a post. should read:

I have no issues with this on Windows Vista. Can download a torrent at 300+ KB/sec with no effect on my browsing. tcpip.sys doesn't actually seem to be causing any trouble.

I would doubt that is your problem, it sounds more like the router. Have you set up port forwarding? Before I did that my router would just freeze up when downloading torrents.



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  Reply # 62443 1-Mar-2007 14:29
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yip - i'm doing this at work at the moment and i've configured my firewall to allow the traffic.  it happens at home too on my cable connection.  either way i don't think its that.



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  Reply # 62444 1-Mar-2007 14:31
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kwaan: can you access your router's web page while the problem occurs?


i can yes, my internal network works fine while this is happening

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  Reply # 62445 1-Mar-2007 14:36

it's your router i'd say.
what make/model ?
tried any other torrent clients?
what happens when you turn off your PC's firewall?




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  Reply # 62446 1-Mar-2007 14:41
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i'm on a corporate network.  using a watchguard firewall which i have created policies for the torrent program to nat to my ip address on the selected port.

i don't believe it is the router, if it were, then all other users on the network would be unable to access the internet at the same time as me - and that's not the case.

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  Reply # 62447 1-Mar-2007 14:54

watchguard has a P2P filter built in according to watchguard.com, have you disabled that?




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