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Repeated disconnects?


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The image below mostly speaks for itself. When using uTorrent for downloading, I experience frequent disconnects that force me to restart my router each time it happens to regain a connection.

But there appears to be no discernible pattern as to why it happens, I can be downloading at ~150kb/s (the max for my connection) or even at ~10kb/s, they can happen several times an hour or maybe once a day.

(apologies for the large image size)


I'd appreciate any help you could offer,


EDIT: Out of sheer stupidity I forgot to list my connection and whatnot:

OS: Windows XP

ISP: Optusnet ADSL (Australian)

Connection speed: 1500/256

Router: D-Link DIR-300

Mode: D-Link DSL-302G

And Avast antivirus.

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I had tested almost all of Ultima's Guide (testing the TCPIP.sys patch now) and I went through and followed your guide a couple of days ago, so the settings I'm using at the moment are:


Upload rate: 10kb/s

Download rate: Unlimited

Max connections: 60

Connected peers per torrent: 35

Upload slots per torrent: 3


All except "Limit local peer bandwidth" ticked

Encryption enabled


Max active torrents: 2

Max active downloads: 1


Default but the ones suggested in Ultima's guide,

net.max_halfopen 8

peer.resolve_country false

Pretty much every different setting I've tried so far hasn't really had any influence on the problem.

(While typing the post (~10 minutes) it happened twice more.)

If there's anything else you need let me know,

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Ah, my bad. My first time using Process Explorer. ^^;

Process    PID    CPU    Description    Company Name
System Idle Process 0 89.39
Interrupts n/a Hardware Interrupts
DPCs n/a Deferred Procedure Calls
System 4
MOM.exe 1172 Catalyst Control Center: Monitoring program Advanced Micro Devices Inc.
CCC.exe 1516 Catalyst Control Centre: Host application ATI Technologies Inc.
ashDisp.exe 1196 avast! service GUI component ALWIL Software
hqtray.exe 1228 VMware Host Network Access Status Tray Application VMware, Inc.
GrooveMonitor.exe 1324 GrooveMonitor Utility Microsoft Corporation
jusched.exe 1336 Java(TM) Platform SE binary Sun Microsystems, Inc.
msnmsgr.exe 1828 Windows Live Messenger Microsoft Corporation
ctfmon.exe 1400 CTF Loader Microsoft Corporation
NMIndexStoreSvr.exe 2012 Nero Home Nero AG
explorer.exe 832 Windows Explorer Microsoft Corporation
TSVNCache.exe 2336 TortoiseSVN status cache http://tortoisesvn.net
firefox.exe 2268 1.52 Firefox Mozilla Corporation
procexp.exe 2228 7.58 Sysinternals Process Explorer Sysinternals - www.sysinternals.com
uTorrent.exe 416 µTorrent BitTorrent, Inc.

Process: uTorrent.exe Pid: 416

Name Description Company Name Version
<Pagefile Backed>
<Pagefile Backed>
<Pagefile Backed>
<Pagefile Backed>
<Pagefile Backed>
<Pagefile Backed>
<Pagefile Backed>
<Pagefile Backed>
<Pagefile Backed>
<Pagefile Backed>
<Pagefile Backed>
<Pagefile Backed>
<Pagefile Backed>
<Pagefile Backed>
<Pagefile Backed>
<Pagefile Backed>
<Pagefile Backed>
<Pagefile Backed>
<Pagefile Backed>
<Pagefile Backed>
<Pagefile Backed>
<Pagefile Backed>
<Pagefile Backed>
<Pagefile Backed>
<Pagefile Backed>
ACTIVEDS.dll ADs Router Layer DLL Microsoft Corporation 5.1.2600.2180
adsldpc.dll ADs LDAP Provider C DLL Microsoft Corporation 5.1.2600.2180
ADVAPI32.dll Advanced Windows 32 Base API Microsoft Corporation 5.1.2600.2180
ATL.DLL ATL Module for Windows XP (Unicode) Microsoft Corporation 3.5.2284.0
CLBCATQ.DLL Microsoft Corporation 2001.12.4414.308
COMCTL32.dll User Experience Controls Library Microsoft Corporation 6.0.2900.2982
comdlg32.dll Common Dialogs DLL Microsoft Corporation 6.0.2900.2180
COMRes.dll Microsoft Corporation 2001.12.4414.258
credui.dll Credential Manager User Interface Microsoft Corporation 5.1.2600.2180
DnsApi.dll DNS Client API DLL Microsoft Corporation 5.1.2600.3394
GDI32.dll GDI Client DLL Microsoft Corporation 5.1.2600.3466
hnetcfg.dll Home Networking Configuration Manager Microsoft Corporation 5.1.2600.2180
IMM32.DLL Windows XP IMM32 API Client DLL Microsoft Corporation 5.1.2600.2180
Iphlpapi.dll IP Helper API Microsoft Corporation 5.1.2600.2912
kernel32.dll Windows NT BASE API Client DLL Microsoft Corporation 5.1.2600.3119
mdnsNSP.dll Bonjour Namespace Provider Apple Computer, Inc.
MPRAPI.dll Windows NT MP Router Administration DLL Microsoft Corporation 5.1.2600.2180
MSCTF.dll MSCTF Server DLL Microsoft Corporation 5.1.2600.3319
msctfime.ime Microsoft Text Frame Work Service IME Microsoft Corporation 5.1.2600.2180
msvcrt.dll Windows NT CRT DLL Microsoft Corporation 7.0.2600.2180
mswsock.dll Microsoft Windows Sockets 2.0 Service Provider Microsoft Corporation 5.1.2600.3394
netapi32.dll Net Win32 API DLL Microsoft Corporation 5.1.2600.3462
NETSHELL.dll Network Connections Shell Microsoft Corporation 5.1.2600.2180
ntdll.dll NT Layer DLL Microsoft Corporation 5.1.2600.2180
ole32.dll Microsoft OLE for Windows Microsoft Corporation 5.1.2600.2726
oleaut32.dll Microsoft Corporation 5.1.2600.3266
rasadhlp.dll Remote Access AutoDial Helper Microsoft Corporation 5.1.2600.2938
RPCRT4.dll Remote Procedure Call Runtime Microsoft Corporation 5.1.2600.3173
rsaenh.dll Microsoft Enhanced Cryptographic Provider Microsoft Corporation 5.1.2600.2161
rtutils.dll Routing Utilities Microsoft Corporation 5.1.2600.2180
SAMLIB.dll SAM Library DLL Microsoft Corporation 5.1.2600.2180
Secur32.dll Security Support Provider Interface Microsoft Corporation 5.1.2600.2180
SETUPAPI.dll Windows Setup API Microsoft Corporation 5.1.2600.2180
SHELL32.dll Windows Shell Common Dll Microsoft Corporation 6.0.2900.3241
shfolder.dll Shell Folder Service Microsoft Corporation 6.0.2900.2180
SHLWAPI.dll Shell Light-weight Utility Library Microsoft Corporation 6.0.2900.3462
USER32.dll Windows XP USER API Client DLL Microsoft Corporation 5.1.2600.3099
USERENV.dll Userenv Microsoft Corporation 5.1.2600.2180
uTorrent.exe µTorrent BitTorrent, Inc.
uxtheme.dll Microsoft UxTheme Library Microsoft Corporation 6.0.2900.2180
VERSION.dll Version Checking and File Installation Libraries Microsoft Corporation 5.1.2600.2180
WLDAP32.dll Win32 LDAP API DLL Microsoft Corporation 5.1.2600.2180
WS2_32.dll Windows Socket 2.0 32-Bit DLL Microsoft Corporation 5.1.2600.2180
WS2HELP.dll Windows Socket 2.0 Helper for Windows NT Microsoft Corporation 5.1.2600.2180
wshtcpip.dll Windows Sockets Helper DLL Microsoft Corporation 5.1.2600.2180
xpsp2res.dll Service Pack 2 Messages Microsoft Corporation 5.1.2600.2180

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I just don't understand enough about Process Explorer and HijackThis! lists to spot what's causing your problems. :(

Needless to say, if it isn't hostile software on your computer...or bad networking hardware...then it may be your ISP.

Have you done internet searches about your ISP disrupting BitTorrent?

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Wow, I hadn't thought about doing that...

Damn, listed as a "Bad ISP" on the AzureusWiki. Apparently it "limits bandwidth for accounts with a high traffic volume". Which I find interesting, because it doesn't seem to block HTTP or any other sort of traffic. Maybe it just blocks unknown/typically unused ports.

Anyway, thanks for all your help and I suppose I should go find another ISP.

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It's not hard with connection monitoring software to spot almost certain BitTorrent traffic...even without knowing what torrent/s are running or what trackers are being connected to.

BitTorrent has a BIG obvious sign with 1 incoming listening port with lots of peers/seeds connecting to it. And if any of them aren't using encryption, then ALL of them on the incoming listening port can be assumed to be BitTorrent traffic.

Outgoing is a tiny bit harder to determine if it's encrypted...but there's still patterns, such as retrying the same "dead" ips over and over again...or packet sizes...or call-and-reply behavior between the uploader and downloader on that connection (they can be both if both are peers).

Some ISPs just throttle everything they don't recognize...and throttle recognized BitTorrent traffic even further.

Not many ISPs that I know of still use break-the-connection techniques to hinder BitTorrent traffic.

ComCast (mostly!) quit.

This can be badly out-of-date:


...with a handful of ISPs getting better, and numerous more getting a LOT worse.

Methods change, new screw-the-customer hardware gets added or updated.

To really find out about your ISP's methods, try DSL reports forums:


...and try to get in touch with local computer people who also (are forced to) use the same ISP as you. I've tried local computer stores myself with some success...asking both customers and employees. It depends on how much competition there is as well as luck finding someone else who better understands the problems.

Changing ISPs can be a dangerous undertaking...the OLD ISP can be vindictive, such as continuing to charge after cancellation (the AOL approach) or not allowing you to get a new MAC code for your dry DSL line to the local exchange (ADSL ISPs in the UK approach). The NEW ISP can be as bad or worse than the old...as they're all in collusion over how much to charge and what minimal quality of service to provide -- sometimes forced by the government!

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Unfortunately, most of the people around my areas usually either don't use my ISP, or aren't tech-minded enough to get much information from. Pretty much all of the telephone lines are owned by one company, owned by the government and everyone pays a rental fee.

But the ISP I'm looking to change to is based in my state only, running completely on their own lines instead of the major company's. It's currently cheaper, faster and comes recommended by a few friends of mine, so that's probably where I'm headed before the new month rolls over.

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  • 2 months later...

I am having the same problem as Wolfi,

If I go to the security event viewer in computer management after the disconnect occurs, I get a bunch of errors with the type:"Failure Audit". When I open the error, it says:


Event Type: Failure Audit

Event Source: Security

Event Category: Detailed Tracking

Event ID: 861

Date: 5/7/2009

Time: 11:41:44 PM


Computer: LENOVO-6806735A


The Windows Firewall has detected an application listening for incoming traffic.

Name: -

Path: C:\WINDOWS\system32\svchost.exe

Process identifier: 1816


User domain: NT AUTHORITY

Service: Yes

RPC server: No

IP version: IPv4

IP protocol: UDP

Port number: 55142

Allowed: No

User notified: No

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.


Clicking on the events.asp address at the bottom brings up a verification to send information which states that the file involved is: xpsp2res.dll

Do you get the same error Wolfi? Does anyone have any insight into this?



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