Latitude D620 Network Dropping

Question

I have an infuriating problem. My internet connection keeps dropping. When I boot up it's ok for a few minutes and then it just drops for no apparent reason and I can't get it back without rebooting. Network connections says I'm still connected. In reality there is no network capability at all. No internet, no file sharing, no printing. This occurs whether I'm using ethernet cable or wireless and it only happens with the Latitude. There are four other machines on the home network and they all work fine - otherwise I wouldn't be able to make this posting! I have ensured that I have the latest drivers for both NICs.   I've checked the event log for the time when disconnection occurs and I get different messages each time. The latest one is 4319 NetBT which tells me there is more than one machine with that name on the network. No way! I've also had 2 Intelppm 'The Acpi 2.0_PCT object returned an invalid value of 3' ; 7003 Service Control Manager 'The Intel Proset/wireless SSO service depends on the following non existent service S24 Eventmonitor'; 2019 SRV 'the server was unable to allocate from the system nonpaged pool because the pool was empty'; 4226 Tcpip 'TCP/IP has reached the security limit imposed on the number of concurrent TCP connect attempts'. These may be red herrings since I never get the same events twice.   Does anyone have the first clue what's going on because I'm starting to go crazy?

mombodog · Answer

'4226 Tcpip 'TCP/IP has reached the security limit imposed on the number of concurrent TCP connect attempts'   Event viewer never logs red herrings, something is going on, this event 4226 could be a worm or trojan, SP2 limited concurrent TCPIP connections to 10, to prevent the rapid spread of worms and other nasties on the internet. The only things that will cause this event are worms, torjans or a filesharing program. You should post on the HiJack this forum for help to be sure you are not infected, they will instruct you where to get a program to run on your PC and post the results back for help   http://forums.us.dell.com/supportforums/board?board.id=si_hijack

hurleyk1 · Answer

Many thanks - I appreciate you taking the time to respond. Especially since you have solved my problem! Straight away I was able to go to a movie download program supplied by my satellite tv company. This is streamed using Kontiki. Kontiki appears to be a nasty little program - not because it uses P2P to share films, but because it prevents me from using it! How stupid is that? As soon as I disabled the service, evrything came back online and stayed online. Trouble is, I can't download the films I've subscribed to!   Thanks again

mombodog · Answer

Here is a little program everyone is using to modify the number of concurrent tcpip connections   http://www.lvllord.de/?lang=en&url=tools              read carefully before using, you sometimes have to re-apply this patch after windows update, this utility can also check the tcpip.sys without modifying it, so you can see if windows update has changed it..

Networking, Internet, & Bluetooth

Latitude D620 Network Dropping

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