Unusual Connectivity Issues in XP

I'm having unusual Connectivity issues in XP. I'll describe my setup, my problem, what I've done and hopefully someone can help:

Setup:
Network
2.5 mbit ADSL, linksys ADSLME1 modem
Linksys BEFSX41 router
Linksys Etherfast LNE100A0 card (recent switch, was using broadcom built in NIC before putting this in to test)

PC:
P4 3.0ghz
windows xp pro SP2
full updated as of today (Feb 17th)
1 gb dual channel ram
installed PCI cards: ASUS TV-capture card, SB audigy 2 ZS, PCI Express x800GT radeon


Problem: My desktop PC will lose its connection randomly. The actually network connection will not show that the connection is broken (infact it shows 50 minutes of connectivity right now, but I've lost my connection at least 4 times during that period). My instant messengers will reconnect (using trillian pro 3.1) and web pages cannot be accessed. Occasionally I can't even access the router. While this was going on about an hour ago, I used the laptop beside me (Toshiba Tecra A3 running Fedora core 4) to bring up a web page and it worked, indicated to me that this is a problem local to the desktop)

What I've done: Spyware scans (ad-aware, spybot, I use spyware blaster as well). Anti-virus scans (AVG), all come up clean. I've switched out my network card to ensure its not that. I've run windows update. I've checked my background tasks and tweaked my services to clear out any garbage I don't need (using a mirror of Blackvipers Service guide). This problem started before the service tweak.

I've checked the system log and there doesn't seme to be anything giving a clue as to what might be causing this. There are no errors or warnings that correspond with the disconnects. I've checked my router logs to verify that this isn't a network problem, and to see if there is any unusual activity corresponding to these times. There does not appear to be.

At this point: Any thoughts? Any additional information required? Even while writing this I had another issue where I suddenly couldn't access the router in browser, saying it couldn't be reached (yet web pages worked) and my laptop was able to access the router without issue. After about 15 seconds I could do so again on the desktop. Something is definitely not working right for me.

 

A question that I have would be, Why the two Routers ?

I have a Linksys BEFSR41 ( 4 port ) Router serving 3 machines and a Printer.

At least it would be if I did not have a 4 port Switch ahead of it because I plan(ed) to add another machine.

What is the difference between the SX41 and the SR41 ?

BillyBob

 

Sorry just carelessness on my part, the ADSLME1 is the DSL modem

http://www.linksys.com/servlet/Sate...636538&pagename=Linksys/Common/VisitorWrapper

that is the product page on the SX, as far as I can tell its a much more advanced model.

 

When I went back and re-read your post more carefully I suspected that a mistake had been made.

Especially when I saw ADSL as part of the model number.

I have a Linksys BEFCMU10 Modem.

I had a Modem provided by the Cable Company and had problems until I changed the Modem, the Router and my 4 port switch to all the same maker. ( Linksys )

BillyBob

 

I Recently did that. Before I had a Dlink modem and a Dlink router, but I switched it all out for linksys stuff. Though this was about 2 months ago, with this just being a development today, I don't think that has anything to do with it though.

[edit]I just had this happen again. I grabbed some router log (ALL) from my router when this happened. Nothing unusual. There is a lot of garbage traffic being dropped by my router, but thats a constant thing, this is approximately 1 minute before and after when it cut out:

Code:

2006-02-18 08:47:03 UDP from 219.79.35.67:36016 to 192.168.1.101:16532
2006-02-18 08:47:03 3/ICMP from 192.168.1.101 to 219.79.35.67 Dropping ICMP error message. Original UDP from 219.79.35.67:36016 to 209.89.219.209:16532
2006-02-18 08:47:13 UDP from 81.234.224.7:6882 to 192.168.1.101:16532
2006-02-18 08:47:13 3/ICMP from 192.168.1.101 to 81.234.224.7 Dropping ICMP error message. Original UDP from 81.234.224.7:6882 to 209.89.219.209:16532
2006-02-18 08:47:33 3/ICMP from 192.168.1.101 to 81.234.224.7 Dropping ICMP error message. Original UDP from 81.234.224.7:6882 to 209.89.219.209:16532
2006-02-18 08:47:36 UDP from 65.220.44.68:4177 to 192.168.1.101:16532
2006-02-18 08:47:36 3/ICMP from 192.168.1.101 to 65.220.44.68 Dropping ICMP error message. Original UDP from 65.220.44.68:4177 to 209.89.219.209:16532
2006-02-18 08:47:38 UDP from 221.197.19.98:18161 to 192.168.1.101:16532
2006-02-18 08:47:38 3/ICMP from 192.168.1.101 to 221.197.19.98 Dropping ICMP error message. Original UDP from 221.197.19.98:18161 to 209.89.219.209:16532
2006-02-18 08:48:18 UDP from 58.33.194.177:18388 to 192.168.1.101:16532
2006-02-18 08:48:18 3/ICMP from 192.168.1.101 to 58.33.194.177 Dropping ICMP error message. Original UDP from 58.33.194.177:18388 to 209.89.219.209:16532
2006-02-18 08:48:20 TCP from 70.24.163.18:2996 to 192.168.1.101:16532
2006-02-18 08:48:20 TCP from 192.168.1.101:16532 to 70.24.163.18:2996
2006-02-18 08:48:33 UDP from 220.129.216.41:26678 to 192.168.1.101:16532
2006-02-18 08:48:33 3/ICMP from 192.168.1.101 to 220.129.216.41 Dropping ICMP error message. Original UDP from 220.129.216.41:26678 to 209.89.219.209:16532
2006-02-18 08:48:50 UDP from 203.86.8.101:24800 to 192.168.1.101:16532
2006-02-18 08:48:50 3/ICMP from 192.168.1.101 to 203.86.8.101 Dropping ICMP error message. Original UDP from 203.86.8.101:24800 to 209.89.219.209:16532
2006-02-18 08:48:51 1717/TCP from 207.46.6.35:1863 to 192.168.1.101:1717 Invalid TCP packet received, dropping packet
2006-02-18 08:48:51 1717/TCP from 207.46.6.35:1863 to 192.168.1.101:1717 Invalid TCP packet received, dropping packet
2006-02-18 08:48:52 1717/TCP from 207.46.6.35:1863 to 192.168.1.101:1717 Invalid TCP packet received, dropping packet
2006-02-18 08:48:54 UDP from 83.237.219.229:10783 to 192.168.1.101:16532
2006-02-18 08:48:54 3/ICMP from 192.168.1.101 to 83.237.219.229 Dropping ICMP error message. Original UDP from 83.237.219.229:10783 to 209.89.219.209:16532
2006-02-18 08:48:55 1717/TCP from 207.46.6.35:1863 to 192.168.1.101:1717 Invalid TCP packet received, dropping packet
2006-02-18 08:48:56 UDP from 203.86.8.101:24800 to 192.168.1.101:16532
2006-02-18 08:48:56 3/ICMP from 192.168.1.101 to 203.86.8.101 Dropping ICMP error message. Original UDP from 203.86.8.101:24800 to 209.89.219.209:16532