Extreme slowdown for internet after format.

[usslindstrom]

Recently, I had the pleasure of having the hard drive crash in one of my machines. After a new hard drive, and a fresh install of everything, the computer is back up and running to the best it can... Except for one thing:

The connection to the internet is EXTREMELY slow. To add insult to injury, prior to the HD failure, everything was peachy. I haven't changed anything out on the machine, except the hard drive (Wiring, etc. are all exactly the same place they've always been)

I have a setup of computers, all running a gigabit lan. All of' em are fine with the speed, including the newly formated computer I'm having the problem with. I can transfer files at the 1Gb/s speeds, but the internet seems to have a different idea on what my download speeds should be. All fingers are pointing to either my cable modem (Motorola http://broadband.motorola.com/consum...oducts/sb5101/ ), or the router (D-Link http://games.dlink.com/products/?pid=371&#DGL-4100 ). However, all the other machines on the network are unaffected, and are operating at the speed that they should be.

I've taken the libery of running everything through a proper reset cycle (beginning with the modem, then router, etc.) - Still no joy. On the computer in question with the slow internet, I even tried the Webroot Accelerate program and played with a few settings. - Even putting the computer in a DMZ from the router seems to be incorrect.

Before the Hard Drive crash, everything was great... That, and Google didn't seem to offer much help. You guys have any ideas?

[_Switch_]

before your internet crashed, and you reformatted, did you tweak any of your settings? or download an "internet optimizer"? that would be my only thing......and as i've read all your computers are hooked up via wire, and not wireless, so that shouldn't be a problem....

[paul9]

Try Dr. TCP over at http://www.dslreports.com/drtcp

[johnnyis42]

ok, you're saying the internet is slow.... have you checked that all your drivers are installed after formatting and reinstalling? there's a chance a chipset driver is bottlenecking the network communication, or the default drivers don't support busmastering so you'r actually experiencing the lag of your pci bus and not specifically slow internet.

while you're at dslreports, run their tweaktest too, see what numbers it throws back at you.

[usslindstrom]

-K-

Ran quite a few of the tests from DSL reports. My connection speed is fine, and I'm getting my advertised download speed. I was able to narrow the slowdown to my browser (Both Firefox and Internet Explorer) and P2P software (Shareaza). In all instances, it seems like there is a bottleneck somewhere that floods the ports that they use.

For instance, when I have something as small as a web page refresh going on, every instance of Internet Explorer or Firefox is halted, and nothing gets downloaded. Likewise, if my P2P software is running, I can never get anything downloading faster than 1Kb total, I'm not able to get on any website.

I cut a small pic of the P2P in action behind the browser. Keep in mind, that while nothing is being uploaded or downloaded to the P2P, the browser just reports that it's waiting for the website.

Plus, I've included a pic of what happens when I trace the route of anything. Notice that te 2nd entry times out. I think that's where the problem is:

I don't have any resource conflicts on any of the things in the computer, and everything is up-to-date.

[usslindstrom]

Oh - Almost fogot...

Run Spyware S & D, and adaware on a religious basis, so I'm not infected somehow. -Nor do I think that I'm some part of a DOS attack, since the other computers on the network are unaffected.

[paul9]

Shareaza? Do you have the little Bandwidth monitor thingy open? See the little arrow at the bottom? Grab it and drag it down to about two percent. How is your connection now?

[usslindstrom]

No change.

I wish the slowdown was just limited to Shareaza - The simple solution would be not to use it. - But it's more than that. I was just showing the example, that even though nothing was being routed, something is flooding the port (I believe) so that nothing else can get on the internet. Weird, cause' P2P and Web Browsers use different ports all together.

[paul9]

Shareaza can suck the marrow out of your connection if it is badly configured. If the slowdown happens without Shareaza running, then obviously you have a different problem. Maybe a firewall glitch? What are you using for your firewall?
Also, you can check out your modem with help from http://homepage.ntlworld.com/robin.d...ps/signal.html

[johnnyis42]

if you have so much activity on your hard drive from people accessing the fragmented files you've downloaded, that'll cause pretty good slow downs as well.