So when I got home from work my internet was extremely slow, also tried connecting to other computers on our house network and it wouldn't work, internet explorer, firefox, and coreftp all experienced the slowdown

Sometimes I can fix the problem by disabling and re-enabling the network card under the "network connections" window. Other times I need to reboot, sometimes multiple times, before it works back at full speed.

Problem seems to develop after several hours of idle time regardless of what programs are left running. I've done the obvious and scanned for viruses and spyware using the most up to date definition files. Also uninstalled Adobe Reader which I remember it trying to update and having some issue near the time I started having the network slowdown problem.

Upload speed doesn't seem to be affected, only download. Suggestions?

Quote :

"----when I first got home---- dslreports.com speed test result on 2006-03-22 09:06:02 EST: 15 / 354 Your download speed : 15 kbps or 1.9 KB/sec. That is 99.6% worse than an average user on comcast.net Your upload speed is much faster than down.. have you tweaked? Your upload speed : 354 kbps or 44.2 KB/sec. That is 9.6% worse than an average user on comcast.net ----After a few reboots---- dslreports.com speed test result on 2006-03-22 10:02:10 EST: 5301 / 330 Your download speed : 5301 kbps or 662.6 KB/sec. That is 17.6% better than an average user on comcast.net Your upload speed : 330 kbps or 41.3 KB/sec. That is 15.8% worse than an average user on comcast.net"

3/22/2006 10:13:19 AM

unless the computers all have the same configuration, or if one of them has a worm, the fact that they're all effected points to something else.

have you tried a different router/switch?

Try transfering a large file from one computer to another accross your local network. If the slowdown occurs here it might point to your router/switch.

have you tried connecting directly to the modem?

Have you tried rebooting the modem when the slow down occurs?

Loose cables?

I'd check all these things to see if you can narrow it down to a single source on your network.

3/22/2006 10:19:43 AM

anyone else sharing internet access with you?

is it always around the same time of the day?

3/22/2006 10:28:31 AM

I ran the same speed test from DSL reports on my laptop (connected to the same network, but over wireless-g instead of hard wired) right after the low score with the desktop and scored somewhere in the 500kb/sec download rate and 40 kb/second upload rate. Also none of my roommates have complained about the internet being slow for them.

3/22/2006 3:58:37 PM

any of them using bittorrent?

3/22/2006 4:21:32 PM

No, I'm the only one that uses any kind of p2p network (via Shareaza) and I keep that shut down unless I am using it. Also none of my tasks looked suspect, maybe one of you guys will recognize something:

Quote :

"Image Name PID Services ========================= ====== ============================================= System Idle Process 0 N/A System 4 N/A smss.exe 488 N/A csrss.exe 544 N/A winlogon.exe 568 N/A services.exe 612 Eventlog, PlugPlay lsass.exe 624 PolicyAgent, ProtectedStorage, SamSs ati2evxx.exe 800 Ati HotKey Poller svchost.exe 816 DcomLaunch, TermService svchost.exe 872 RpcSs svchost.exe 940 AudioSrv, Browser, CryptSvc, Dhcp, dmserver, ERSvc, EventSystem, FastUserSwitchingCompatibility, helpsvc, lanmanserver, lanmanworkstation, Netman, Nla, RasMan, Schedule, seclogon, SENS, SharedAccess, ShellHWDetection, srservice, TapiSrv, Themes, TrkWks, W32Time, winmgmt, wscsvc, wuauserv, WZCSVC InCDsrv.exe 960 InCDsrv svchost.exe 1064 Dnscache svchost.exe 1120 Alerter, LmHosts, SSDPSRV, WebClient spoolsv.exe 1324 Spooler DefWatch.exe 1464 DefWatch mpservic.exe 1500 MpService Rtvscan.exe 1576 Norton AntiVirus Server svchost.exe 1708 stisvc wdfmgr.exe 1780 UMWdf alg.exe 364 ALG ati2evxx.exe 2036 N/A explorer.exe 2112 N/A InCD.exe 2196 N/A TaskSwitch.exe 2212 N/A atiptaxx.exe 2224 N/A soundman.exe 2236 N/A RegTwk.exe 2244 N/A jusched.exe 2276 N/A VPTray.exe 2284 N/A T3Mon.exe 2292 N/A aim.exe 2340 N/A TeaTimer.exe 2348 N/A iexplore.exe 2824 N/A taskmgr.exe 3616 N/A cmd.exe 3712 N/A wmiprvse.exe 4008 N/A tasklist.exe 1024 N/A"

I haven't googled all the programs running as services yet and I have noticed some high cpu utilization (as high as 50%) on one of the svchost.exe listings on my task manager when I was having problems with the network, killing the task didn't have any effect on performance though.

3/22/2006 4:29:43 PM

so we've isolated to your PC only?

3/22/2006 4:31:35 PM

I haven't tested my roommates' computers but my laptop works fine, after work, I'll try my old win 2k laptop and see if it is affected too. It seems to be isolated to my comptuer

3/22/2006 4:36:05 PM

haven't had the problem in 2 days, maybe uninstalling acrobat was the key... it never seems to update itself correctly on my computer

3/24/2006 8:36:29 AM