Vista - SLOW INTERNET SPEEDS WHEN USING VISTA

SUBJECT: Major Slowdown in Upload Speed after using MS Vista-Help?

HERE IS MY SYSTEM CONFIGURATION:

-HP Pavilion Slimline s3100y PC
-Genuine Windows Vista Home Premium (32-bit)
- Intel Core 2 Duo processor E4500 (2.2GHz)
- 2GB DDR2-667MHz dual channel SDRAM (2x1024)
- 256MB NVIDIA GeForce 8400GS, DVI-I, HDMI
-NETWORK ADAPTER: Intel PRO/100VE
- 400GB 7200 rpm SATA 3Gb/s hard drive
- 16X DVD+/-R/RW SuperMulti drive
- 15-in-1 memory card reader, USB, headphone port
- Integrated 7.1 channel sound w/front audio ports
- HP wireless keyboard and HP wireless optical mouse
No outside vendor Firewalls-only the built in MS one
AVG Anti Virus (Free Editon) installed

CABLE INFO:
Cox HSI Premier Service 12down/1up
Direct-No Router
Modem to Computer connection: Ethernet Cable
Modem:
AMBIT U10C018
Cable RF MAC Addy: 00197E3C4E18
HERE IS MY PROBLEM:

When I first start up MS Vista I get speeds of about 15Mbps Down/1Mbps Up
with Ping times in the 20-30ms range.

After a few mins I notice things starting to slow down and taking longer to
load. Clearly, running Vista is killing my Broadband Connection speeds...but
WHY?

I run another speed test from Speedtest.net and find that I have dropped to
about 10Mbps Down/100kbps Up and my Ping times have gone up to over 300ms!!

I can then shut down Vista and when I start it back up...I am back down to
what I should have in the 15/1 25ms range?

I had two techs out from Cox and they basicially said "This is a
hardware/software problem...all of your readings on our test equipment are
just fine...your signal strength is excellent..When we unplug the Ethernet
Cable to your computer, our ping times are excellent and when we plug it
back in, they go way up" They also replaced the Modem to no effect.

The suggested that I contact Customer Support at HP...I did so and explained
the problem only to have the Tech Support person tell me that "You have a
Cable problem, not a hardware problem...call your ISP"!!!

I tried to contact MS Vista Support, but they wanted $59 a question!

Then I found this excellent Forum.

Can anyone help me....it is SO frustrating to have an Expensive ($56.95/mo)
superfast connection capable of such high speeds (I saw over 25kb/s Download
speed once!) dragged down like this and not be able to determine why or what
to do to correct the problem!

Here are three representative tests done on Speedtest.net: The first right
after I started up Vista, the second after it had been running for 13mins
(Note the tremendous drop in especially the Upload speed and the very sharp
increase in Ping time in ms) and the third after shutting down Vista and
starting it up again (Note that theUpload speed is now back up and the ping
times are back down)





If the above 3 test results don't properly show in this forum, here are two
URLs that show the speed readings right after booting up Vista and then
after running it for a while:
http://www.speedtest.net/result/186484236.png

http://www.speedtest.net/result/186488007.png

So far I have done the following to try and fix this BUG:
1. Disabled "Autotune" in the "Command Prompt"
2. Turned off the MS Windows "Phishing Filter"
3. Ran full AVG Virus Scan with negative results

I read about but have not been able to do the following that apparently
worked for others:
1. Tried to "Rollback my Network Adapter" but the "Rollback" option is
grayed out and there are no "Updates"
2. Disable IPv6 (Don't feel comfortable trying this as I don't feel
competent to do so)

My next step is to drop $100 and call out "MAKE IT WORK" to see if they know
how to correct this intolerable situation.

I am hoping someone here will help me so I can cancel the MIW tech house
call!

Sincerely,

Charles I. Proche

ChuckP wrote:
Can't offer any immediate help but this has come up a couple of times
and an XP machine on the same router ran fine (If I got the facts right)
which kinds suggests that it's somewhere between Vista and the NIC
driver, something like a buffer can't keep up or something like a memory
leak.

Would help if the others had given more specific details of NIC etc but
maybe I missed it.

On the other hand Vista has some file transfer controls that I don't
know much about but there's some info here
so maybe you can see if there's any resemblance to your specific case
and then "Maybe" someone can suggest something to try.

I appreciate that this may not directly relate but the idea is to
provoke some thought on what's different between the way Vista does
things and the way others do. Obviously there have been some changes.

Charlie Tame wrote:
tcpip.sys has limited connections per server (less than xp's 10)
(security measure = 2 connections, for cut worm traffic)

Also has a very buggy grip on remotes and receives (packets)
(this appears to be a dynamic setting not accepted by a .sys)
The net buffer is what Charlie may be thinking of, although
I can't see why a server 2003sp1 tcpip.sys might not fit in
given Vista is a 2003sp1 derivative.

Some other stuff also but you may have to fix it yourself.

It would take a couple half-ass MS programmers maybe a couple of
days to kludge a workaround, another month to recode correctly.
heh, future compatibility with devices not even in market.

Some toying with out of bounds hard coded net configurations
and other dynamic allocations that can't find their way home
inside a dynamic link hierarchy...should be more secure.

NT Canuck
'Seek and ye shall find'

NT Canuck wrote:
Well why would it appear to be only some machines and not all or most if
there's some inherent problem?

And it starts off okay but then gets "Choked".

I noticed "Something" similar using Wireless but the location was not
great and I did not see it when using cables instead. to give an analogy
it was like a clogged fuel filter. Once you used up what was sitting in
the filter getting more through was a problem. I didn't pay much
attention since the location was suspect AND I'd had problems with
drivers since the card was a model with a suspect "Revision" number.

I read something about a file copy problem related to this...and wondered if it's actually unrelated to the TCP itself and more to do
with general network throughput somewhere. When they use the word "Auto"
with anything I get suspicious

Charlie Tame wrote:
Some machines will have either a more compatible network system
or a network so old it doesn't even get a place to choke up on.
A great deal of Vista's tcpip depends on dynamic selfadjustment.
Ok...that's likely the stack getting plugged up (not unloading),
also if too many background (online) tasks start firing up they
may be competing for limited resources. Vista Ultimate also appears
to have a 25 connection limit while others are 2 or around there.
See above, but in reality Vista's network is excellent when it works,
the problem was/is that the settings and some code are <expletive> up.
Well..that may work temporarily for some, if it was that easy
to fix then we'd all be happy. Fact is at least one dynamic
setting is not kicking in and that makes connections flakey,
this may have something todo also with virtual linking and
all that other stuff going on that keeps waiting for input.
Anyways...it's no big deal to find/fix so shame on MS.
ndis layer...but a lot more app's and programs connect via tcp
both external and internal than you'd imagine, the auto is part
of tcpip.sys, although I could give a few dozen switches that
tune the stack/rss behavior it won't do anything for the
broken code inside current network...code that is repairable.

They reset the above and at least half the problems and many
incompatibilities disappear completely at least for networks.

There's something wrong Charlie, MS just isn't that stupid.

NT Canuck
'Seek and ye shall find'

NT Canuck wrote:
Well I have seen one instance where a bad cable caused real trouble, I
guess the retries bogged things down, I guess that is a possibility if
there's a throttle being reduced, too many retries send less data etc...

I have had exactly the same problem on two occasions and each time I have
used System Restore to go back to a Restore Point prior to the latest Windows
Updates and on both occasions my Internet speed has returned to normal.
The latest updates on 11th Sept caused the problem to return and by the
process of elimination I narrowed the culprit down to the Update for Windows
Mail Junk E-Mail Filter Sept 2007 KB 905866.
I have no idea why this should cause the problem but without this my
internet speed is first class and with it the speed drops very dramatically

"ChuckP" wrote:

On 24 sep, 20:34, Kiloran <Kilo...@xxxxxx> wrote:I have had exactly the same problem with my internet connection from a
Vista PC with Wireless access to a Linksys router.
I've uninstalled the KB 905866 and it works perfectly again.

Thanks a lot for your tip.

Pleased to be of assistance emmanuel but it would be nice to know why this is
happenning.

"emmanuel.chaize@xxxxxx" wrote: