Slow internet speed due to Marvell Yukon LAN driver

Hello all!
I am a newbie here so not sure if I am supposed to ask this question here but anyway hope my problem gets solved somehow.
I am using Toshiba Satellite A200 Notebook, I got this last week and everything works fine except for my internet speed, its too slow. I am on a 10Mb/s plan but my speed is no where close to that. I am getting speeds near 200kb/s to 300kb/s max. After a lot of googleing I came to know that the Marvell Yukon LAN driver is the problem here.
According to some websites, we are supposed to roll back the driver to a previous version, I did this but still the speed does not want to increase. I have tried almost all the things I can do but getting nowhere so far. I have called my ISP, they say everything is looking good on their side, ran Norton Antivruis scan on this machine, disabled firewall, and the list goes on but nothing.
It would be great if anyone could help me out here.
Thanks in advance...

Hi,
did you checked your connection with another computer, if the problem still exists with another machine??
Would be really interesting...otherwise I suggest you to recover your machine to "factory-default". Maybe it solves something.
Another idea would be to remove the "Qos" (Quality of service)service from your network connection which virtually slows down the connection due to software reasons.
Please give some feedback and please tell me which system youre using (Vista, XP)
Thx
bye

Similar Messages

Slow internet speed due to PC interfering with BT ...

In July I bought a Medion desktop PC from Aldi. From the outset I had problems getting it to work reliably with the Internet. When the PC was switched on the download speed would be about 14Mbps, but it would gradually deteriorate until it stopped working altogether, and it would also slow down the rest of my network. This was the case using either wired or wireless connection. BT support weren't interested as all my other devices (two laptops, Nexus 7, and iPhone) worked perfectly as long as the Medion PC wasn't connected. They said the PC must be faulty and I couldn't argue with this. I became convinced that as the problem got worse after the PC had been switched on for some time, it must be a thermal problem in the PC. Support from Medion was useless, so the PC was taken back to Aldi for a refund.
Last month I got a new PC from a local shop that custom-builds PCs to your spec. When I got it, lo and behold it had exactly the same problem, although it worked fine in the shop on their (non-BT) internet connection, and also when the owner subsequently tested it on his home network. I also noticed that the problem occurred to a lesser extent (slowing down other devices on the network) if the PC was switched on but not connected to the Internet, with both wired and wireless network adapters being disabled. This makes me believe that the PC is generating some interference to which the BT Hub is susceptible.
It's pointless trying to get support from BT as they will just use the same argument, (other devices work fine so it must be the PC) - but on the other hand, the PC works fine on other Internet connections.
The PC has an AMD 4 x 3.8GHz processor. The PC and Hub are in different rooms about 20ft apart.
Has anyone experienced a similar problem and found a solution? Would a later version BT Hub be any better? If the problem isn't resolved I am going to switch back to Virgin when my BT contract runs out.

Thank you very much for your suggestions. I did some experiments and got some interesting results.
The monitor isn't the problem, completely disconnecting it made no difference. The interference is definitely being carried over the mains. Per your suggestion, I tried leaving the new PC in its existing location but connected via an extension lead to the cooker socket in the kitchen, a 40A circuit close to the consumer unit. With the new PC on but not connected to anything, other devices on the network are fine. However, connecting an ethernet cable immediately screws things up, so the the ethernet cable is also acting as a conduit for the interference. Wireless on the new PC seems to work but it and the rest of my network are still slow, fluctuates between about 7Mbps and 10Mbps v 14Mbps normally.
I'm not sure if this is going to lead to a practical solution because:
1. Can't run a permanent cable to the kitchen!
2. Speed is not brilliant, wired still doesn't work on new PC.
3. The new PC is being configured in the spare bedroom, but must ultimately replace my old PC in my office. This is where all the ethernet cables on my network converge and where the BT socket is, so the BT Hub must be in the office as well.
4. All PCs are already connected to mains sockets via filters/interference suppressors, so I don't see what else can be done to reduce mains-borne interference.
Having identified the root cause of the problem, any suggestions for a permanent solution that would let me have my office set up as I need it would be very welcome.

I have slow internet speed and having issue with download of photoshop cc is there an alternate I can go somewhere with high speed to download.

I have slow internet speed and having issue with download of photoshop cc is there an alternate I can go somewhere with high speed to download. without using this creative cloud that downloads first.

We need to know more about your system, please download EtreCheck and run the report and please post it on your next reply. Then we can see how your system is configured, what apps are on it and look for anything obvious. We will look forward to seeing your report.

Slow internet speeds and dropping connection

hello, I am making this post on behalf of my dad, for a good few months (5-6 maybe even longer) we have been experiencing slow internet speeds and a dropping connection when ever the phone is picked up. when an incoming call is answered some or all devices connected to the internet drop out for a second then come back online, the connection does not completly disapear but causes any voice chat, streaming or gaming to disconect. We have BT wireless phones (not sure what exact type) which we have had for a few years. they are connected through an ADSL filter which as far i can remember has been there for years. We have a netgear DG834GT router which has also been there for a few years. I went onto its settings and got this information, not sure if its usefull or not.
System Up Time 42:18:47
ADSL Link
Downstream
Upstream
Connection Speed
1760 kbps
448 kbps
Line Attenuation
61.0 db
31.5 db
Noise Margin
13.1 db
13.0 db
I also got this from the BTW speed tester
1. Best Effort Test: -provides background information.
Download Speed
1.24 Mbps
0 Mbps
2 Mbps
Max Achievable Speed
Download speedachieved during the test was - 1.24 Mbps
For your connection, the acceptable range of speeds is 0.4 Mbps-2 Mbps.
Additional Information:
Your DSL Connection Rate :1.76 Mbps(DOWN-STREAM), 0.45 Mbps(UP-STREAM)
IP Profile for your line is - 1.25 Mbps
I hope this is enough information to figure out what is going on with it.

put everything back as it was and this is what it looks like now:
ADSL Link
Downstream
Upstream
Connection Speed
160 kbps
448 kbps
Line Attenuation
61.5 db
31.5 db
Noise Margin
19.9 db
12.0 db
also while i was doing that i did i quiet line test and both myself and my brother listened to it and agreed that there was buzzing/static

Slow internet speed -upgraded it to highest speed

I have had FiOS internet for about four years and never questioned the speed 10/2, but I had it plugged into the router. On 3/4, I upgraded to TV FiOS/internet and phone bundle. I do not have my computer where the router is located now (downstairs) and I had asked them to move it upstairs, but left before they had done it. When I checked the speed (I guess the wireless speed since it is not plugged in to the router), it was 15.66/10 mbps. I ordered the 35/35 mbps speed bundle. I called Verizon and asked them about it and she checked the speed and said that it was "pretty good" considering it is wireless. What? I am not getting what I am paying for. Do I need a DSL filter on all the phone lines? Do I need a new router (I still have the old one)? I have read on the community here that everyone has called several times to get an answer to the slow internet speed problem. Does anyone have the 35/35 mbps speed plan and have it work at this speed? I might as well go down to the 15 or 25 plan if that speed is all I am every going to get......But maybe if I go down to 25 plan, I'll get 10 or 15...... I will continue to try and work with Verizon to get this solved. .Thanks for any help.

Sorry to hear we are losing your business. If there is anything that we can do please let us know
Anthony_VZ
**If someones post has helped you, please acknowledge their assistance by clicking the red thumbs up button to give them Kudos. If you are the original poster and any response gave you your answer, please mark the post that had the answer as the solution**
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Slow internet speed - terrible service

For the last 5 weeks I have been plagued with very slow internet speed. I have spent at least 4 hours on the phone with verizon techs. They always say that they will call back and never do. This is absolutely the worst service imaginable.

Step one: Visit http://www.giganews.com/line_info.html and post up the Traceroute the page shows, if you wish. Be aware that your non-bogan public IP Address will show up. It might shown up as the final hop (bottom-most line of the trace) might contain a hop with your IP address in it. Either remove that line or show only the first two octets. What I'm looking for is a line that mentions "ERX" in it's name towards the end. If for some reason the trace does not complete (two lines full of Stars), keep the trace route intact.
For example this what I saw when I was using Verizon
news.giganews.com
    traceroute to 71.242.*.* (71.242.*.*), 30 hops max, 60 byte packets
    1 gw1-g-vlan201.dca.giganews.com (216.196.98.4) 13 ms 13 ms 13 ms
    2 ash-bb1-link.telia.net (213.248.70.241) 39 ms 7 ms 7 ms
    3 TenGigE0-2-0-0.GW1.IAD8.ALTER.NET (63.125.125.41) 4 ms 4 ms GigabitEthernet2-0-0.GW8.IAD8.ALTER.NET (63.65.76.189) 4 ms
    4 so-7-1-0-0.PHIL-CORE-RTR1.verizon-gni.net (130.81.20.137) 6 ms 6 ms 6 ms
    5 P3-0-0.PHIL-DSL-RTR11.verizon-gni.net (130.81.13.170) 6 ms 6 ms 6 ms
    6 static-71-242-*-*.phlapa.east.verizon.net (71.242.*.*) 32 ms 32 ms 33 ms
Step two: Can you provide the Transceiver Statistics from your modem?
#3 If you don't know how to get that info:
a) What is the brand and model of your modem?
b) If you have a RJ-45 WAN port router connected to it: What is the brand and model of the RJ-45 WAN port router?
#4 If you have a RJ-45 WAN port router connected to the modem, even if you know how to get the Transceiver Statistics from the modem: What is the brand and model of the RJ-45 WAN port router?
If you are the original poster (OP) and your issue is solved, please remember to click the "Solution?" button so that others can more easily find it. If anyone has been helpful to you, please show your appreciation by clicking the "Kudos" button.

Slow internet speed, being used by unknown websites

Hello all,
For about a month i have been experiencing slower internet speeds than usual. Contacted the isp and went through all the processes and there was not a problem at their end. I was advised to go to network utility and check how many processes there were, found out that there was too many to count.
It seems i have internet processes coming from my macbook ip address from uknown sources such as ookla.com etc. Now i have downloaded spyware programs for mac which have failed to find any viruses or spyware at all.
Now i know the problem is coming from my macbook as the unwanted guests our appearing under the macbook ip address, my router is receiving the right speed so it can't be the isp?
Right now i am just wondering what to do to stop these processes using up my internet connection and potentially turning my router into a server.
Any help would be grateful.
Mark Lees

Yeah i have little snitch but it appears to not spot these websites, i can send you a screenie of the netstat screen
Then that would imply the only connections going out from your mac are from legitimate applications.
lots of things will engage outbound connections.
safari
firefox
itunes
spotify
and sites that you visit that have embedded video often host the video on other servers. So you would be suprised at how many socket connections you have at anyone time.
If you have little snitch look at the monitor window and it will show all the recent connections.
You could reset little snitch to default rules and then you will be prompted to allow or deny each new connection.

Re: Updating Marvell Yukon ethernet driver on an Equium A300D

About a month ago I think it was I got an alert on the Toshiba Tempro tool to update a driver for the Marvell Yukon ethernet driver on my laptop. I downloaded the zip file as instructed from the Marvell website (an updated driver was released on 18/8/08) and attempted to install it, but it was then I hit a problem. When I try to install it I'm told a previous version is already installed, and to uninstall the previous version first.
The problem is when I go to the Device Manager and try and find the driver, the only entry there's for a "Marvell Yukon 88E8040T PCI-E Fast Ethernet Controller" , but the driver I was prompted to install was for a Marvell Miniport Driver.
At the time I simply ignored it, thinking the update wasn't relevant to me, but since then I've had a number of BSODs - the latest this afternoon - and in all the cases when Windows has finished doing it's error reporting thing, it comes back with the advice that I need up update the Marvell Yukon Semiconductor driver...and directs me to the same download that I was originally directed to by the Tempro alert. Of course again, it tells me I have to uninstall the previous version before installing it, but as I can't find a previous version of this Miniport driver to uninstall there's nothing I can do about it, so again I ignore it. Everything appears to be working fine (apart from my ongoing dropped internet connection problems with my wireless network and the fact that I can't seem to set up a wired connection (maybe because of this driver problem?), but then sooner or later I get a BSOD again, and it blames the Marvell Yukon driver, and I'm back to square one again. I've had the BSOD now 4 or 5 times over the last month.
Any advice appreciated.

Hello
Have you tried to roll back the OS to earlier time using system restore tool?
Try it and let us know if everything works well again. If yes leave it and be happy without updates.

Slow internet speed/ dropping internet

I am on the Bt Ifinity 2, last year at summer time (8/10/2014) every thing was fine 59 mb/s down 19.55 mb/s up. bettween then and the 11/11/2014 speeds fell to 13.8mb/s down 10.24mb/s up. (mediafire link for page download for internet speeds http://www.mediafire.com/download/24vs7ra8pyl09qc/bt+stats.rar )
during this time untill the 19/11/2014 the internet would just drop randomly, 3,5,6 times a day commonly (not shown on the graph for due to no internet). the internet droped and the router was not connected to the internet shown by the ui in 192.168.1.254. internet speed is lower then the what was on the speed test so would strugle to steam youtube videos.
i thought that this was a throtling thing origionaly, but i tryed off peak time 1-4 AM the connection dropped slow speeds
we called a bt enginer out for the 19/11/2014 we a router replacement and some line was changed there was no internet dropping untill reasontly speeds increased slightly.
8/1/2015 I was downloading addons for battlefeild on my playstaion when the internet started dropping again the internet speed on speedtest.net showed a resonable speed of 30mb/s down 1.97mb/s up which should be fine for content consumption. well thats what i thought, youtube videos in 240p would not play.
in my oppinion it looks like bt has being throtiling my traffic, but i know bt only "manages p2p taffic during peak times"
any one know whats wrong, by the way there is know other users on the network at the time of the speed tests
Thanks for reading

Next time your speeds are bad, or right now if they are now, please try this:
In order to rule out the Homehub as potentially being the device responsible for your speed loss, you can connect the Openreach modem directly to the PC and see if the speed improves.
To do that follow these steps:
Step 1: Remove the homehub from the modem cable
Step2: Connect your pc/laptop to the modem via the cable instead
Step3: Open network and sharing centre on windows and click set up a new connection or network
Step4: Connect to the internet then click make a new connection Broadband PPPoE
Step5: Username [email protected] and the password as BT
Step6: connect, If it doesn't,keep pressing try again until it does.
However, please note that this will stop any other access apart from the PC
If you found this post helpful, please click on the star on the left
If not, I'll try again

Very slow Internet speeds throughout most of the d...

For the past month my Internet has been deteriorating. I get patches of the day (maybe 30minutes) where I have a normal Internet speed, latency's of ~30 and download speeds of around 5k kbps. But now my average download speed is more around 300-600 kbs with latency's greater than 150. I find that the connection is slightly better late at night or early in the morning. I have tried the call centre's but they really haven't helped what so ever.
Here is my router status:
Port
Status
TxPkts
RxPkts
Collisions
Tx B/s
Rx B/s
Up Time
WAN
PPPoE
459447
693630
0
1610
30298
07:59:36
LAN
10M/100M
560521
458938
0
24931
2230
08:00:01
WLAN
11M/54M/130M
258804
119804
0
6844
623
07:59:49
ADSL Link
Downstream
Upstream
Connection Speed
6496 kbps
448 kbps
Line Attenuation
14.0 db
7.0 db
Noise Margin
14.9 db
25.0 db
And here is a speed test i just did showing 1157 kbs but this is again due to the fact that I am doing it late (00:30) and that has been the highest it has been in days:
Download speedachieved during the test was - 1157 Kbps
For your connection, the acceptable range of speeds is 600-7150 Kbps.
Additional Information:
Your DSL Connection Rate :6496 Kbps(DOWN-STREAM), 448 Kbps(UP-STREAM)
IP Profile for your line is - 5000 Kbps
Would be grateful for some help/insight in this matter as it very fustrating.

Hi jpleclef,
Your line is entitled to get the speed close to 7 megs. The test that you have uploaded shows the good router status. I would advice you to check it with the ethernet cable (yellow ended). If however it gives you the same speed then it can be considered as an issue.
There might be some flag on the line.
Could you please tell me your plan.
And there are several ways where you can raise this issue to higher level.
Dear jpleclef, Please note that you need to be paitient with this. I am saying this because I've seen thousands issue like this which customer endup giving the BB connection, even this doesn't help because changing the service provider doesn't changes the line.
So, Task for you is:
Check with ethernet cables.
tell me your option plan
In the next post I'll explain you a lot more of the test result that you have posted. Feel free to write me on *******.
Regards,
Abhinav
Abhinav Rai

Absurdly slow internet speeds and often unable to ...

I'm used to getting around 13 Mbps Internet speeds from BT.
In the last few days, although the speed tests show similar results (assuming I can actually get online to test them), Internet browsing has become painfully slow, with many pages simply not loading at all.
I've called BT, and been through some tests with them, and they assure me that everything is fine, and that my Internet speeds are as high as ever.
I've also done some hunting around on google, and tried using open DNS settings, but to no avail. It's especially hard to upload data, and it's almost impossible to send email.
Occasionally, if I turn on my Mac after a longish break, I can get online easily, and send e-mail for a few minutes, then the problem returns.
BT insist that there's nothing wrong with the line, but the fact that the problem affects both my Mac and my iPad suggests that the problem is not with my computer.
Indeed, I'm now in the local pub, and everything is working just fine.
I've been through all the usual things - checking location of Homehub (even though it was absolutely fine for 18 months in its current location), changed the ADSL micro-filter, changed the wireless channel, etc, and to no avail.
What else can anyone suggest?
Thank you.

So, the first time I did this speed-test was on my return home, when everything was working fine again.
Test1 comprises of two tests
1. Best Effort Test: -provides background information.
Download Speed
15742 Kbps
0 Kbps21000 Kbps
Max Achievable Speed
Download speedachieved during the test was - 15742 Kbps
For your connection, the acceptable range of speedsis 4000-21000 Kbps.
Additional Information:
Your DSL Connection Rate :16203 Kbps(DOWN-STREAM), 1159 Kbps(UP-STREAM)
IP Profile for your line is - 14295 Kbps
The throughput of Best Efforts (BE) classes achieved during the test is - 16.11:23.37:60.53 (SBE:NBEBE)
These figures represent the ratio while sententiously passing Sub BE, Normal BE and Priority BE marked traffic.
The results of this test will vary depending on the way your ISP has decided to use these traffic classes.
2. Upstream Test: -provides background information.
Upload Speed
959 Kbps
0 Kbps1159 Kbps
Max Achievable Speed
>Upload speed achieved during the test was - 959 Kbps
Additional Information:
Upstream Rate IP profile on your line is - 1159 Kbps

Windows 7 64 Bit Very VERY slow internet speed

I just bought two new laptops for my wife and I and we've been having terrible trouble with download speeds since taking them out the box.
We are using the exact same configuration and IP as before only our last two computers were on XP and Vista but there were no issues whatsoever. I even went and bought a new router just in case that was the problem but it made absolutely no difference, leaving
me with the conclusion its a problem with the 64 bit version of Windows 7.
Currently I cannot even watch a Youtube video because after loading the first couple of seconds, it stops loading and then after a couple of minutes there's a quick burst of speed and stops again.
I can't complete a speed test on my connection on either laptop. Normally this would take only a few seconds but the site (speedtest.net) crashes every time using windows 7.
Setup;
Windows 7 64Bit
Intel i3 2310M @ 2.1Ghz
4Gb of RAM
My IP is VirginMedia UK on a 10Mb connection (same problem wired or wireless)
As you can imagine this is very frustrating since I have just paid out over £1000 to find my browsing experience has virtually at a stand still.
Any help in this matter would be very much appreciated

I recently had the same problem after installing Windows 7 64bit. The internet speed for some reason was really slow. After looking for a solution I tried to flush the DNS. It worked.
Open start menu
type "cmd" in the search then hit enter key
when the new screen opens type:
ipconfig /release
hit enter and then type
ipconfig /flushdns
hit enter and then type
ipconfig /renew
hit enter and the problem is solved.

Win 7 on bootcamp partition, very slow internet speed

hi!
it might be an answer to my problem somewhere on this forum, but
right now i do not have the time to browse through - so ill just post my problem quick and simple.
im running windows 7 ultimate on a intel imac, via bootcamp. the issue is simple, yet pretty annoying.
in iOS, my internet speed is great, as it should be (my bandwidth is 12/12 mbit).
but in windows 7, for some reason (been like this ever since install) things are going SO slow.
i mean, watching videos on youtube is a nightmare, every 3 second at lowest quality possible, it still
has to buffer. same goes for other streaming sites/services. downloading usually does not exceed 300 kb/ps, but in
ios this could easily hit 1,5 mb/ps.
if i listen to music on say grooveshark (adjusted to lowest quality) the music stops to buffer if i load a different webpage. its that bad.
ive taken a bandwidth check in windows and in iOS, and in iOS the speed is normal, in windows its 1/10th of what it should be.
anyone know why this problem persists?
as i know of, windows 7 doesnt have any bandwidth limiting of default.
so i thought it might be a windows 7/imac hardware conflict. help?

Hi, I'm having the same problem.
I installed win8.1(64bit) on a iMac7,1 20inch(mid 2007) using Winclone.
Everything was working fine after I downloaded some driverhelper and installed those drivers.
Yet the internet on Win8.1 is very slow, the download speed is merely 60-100kb/s .
While if I open the Mac system, the same resource can easily to beyong 2MB/s.
As I have 25Mb/10Mb connection at home.
I'm new here , don't know exactly what driver I need to fix this problem.
Try to install boot camp.
However, I tried 5.0 / 4.0 , it all said bootcamp x64 is not supported on this computer model.
Don't know where i can download the bootcampe 3.0 to have a try ?
Or is it just too old iMac to be fixed？

PC to Mac - slower internet speed?

I have just purchased my first mac (entry level imac 17"). I love the computer and the operating system. However, the internet speed is extremely slow (almost like dial up). I have a pc and a mac, both running off the same connection. The mac is significantly slower surfing the exact sames sites. It's not a cache issue or anything like that. The mac is just slow. I have tried both the wireless and ethernet connections and it's slow either way. I have tried downloading Firefox and that doesn't seem to make a difference either.
Any help?
Thanks

Clint,
Have you tried using the "Automatic" setting that you first saw after setup? Unless you made changes to it, I'd imagine it's still in effect, just not active since you're now using another "Location:" setting. Or, was that "Automatic" setup too slow as well?
If you'd like to try yet again, using the same basics as included in the Network Setup Assistant, but with more stringent settings:))
There's no need to dump any of your current setups that already work - at System Preferences>Network in the "Location:" selector simply use "New Location..." to name yourself yet another new setup (perhaps "wireless Feb 11") and proceed:
Set the "Show:" selector to "AirPort" and choose the "TCP/IP" pane. Check that "Configure IPv4:" is set as "Using DHCP." No other settings are necessary on that preference pane. If you make any change, be sure to click the "Apply Now" button before leaving that preference pane.
Switching from the "TCP/IP" pane to the "PPPoE" pane, if the isp connection settings are already held within your wireless router, which I think they most likely are, the "Connect using PPoE" box should not be checked. There would also be no need to have checked the box "Show PPPoE status in menu bar." If you make any change, again be sure to click the "Apply Now" button before leaving that preference pane.
Now switching from the "PPPoE" pane to the "AirPort" pane, have the box "Show AirPort status in menu bar" checked, and I suggest setting the "By default, join:" selector to "Preferred networks." Eliminate all other networks listed [remember, you'll only be eliminating them from this new location setup, not from your other, already working "location" setups], then add your wireless network security method, name and password to the preferred networks list, and click the "Apply Now" button.
Then within the "Options..." button, I would set the "If no preferred networks are found:" selector to "Keep looking for recent networks" and check the box "Require administrator password to Change wireless networks." I would definitely NOT check the "Automatically add new networks" box. Click the "OK" button and again the "Apply Now" button.
Now switch the "Show:" selector from "AirPort" to "Network Port Configurations" and drag the activated "AirPort" configuration to the top of the list. Once again click the "Apply Now" button.
Even with this new setup now activated, when you open the menu bar AirPort icon you will continue to see the other wireless networks in your area that are visible to your AirPort - but you won't have to worry about them confusing your Network connection, as it will no longer be considering them.
To return to one of your previous connection setups, simply switch the "Location:" selector to the one you want to use, and click the "Apply Now" button. The new setup just completed will remain unchanged in the "Location:" selector under the new name chosen.
Now, in the "Location:" selector name a second "New Location..." (such as "enet to router Feb 11") - this will be for ethernet access to your router.
Set "Show:" to "Built-in Ethernet" and select the "TCP/IP" pane. Check that "Configure IPv4:" is set as "Using DHCP." No other settings are necessary on that pane. If you make any change, be sure to click the "Apply Now" button before leaving that preference pane.
Switching from the TCP/IP pane to the PPPoE pane, if the isp connection settings are already held within your wireless router, which I think they most likely are, the "Connect using PPoE" box should not be checked. There would also be no need to have checked the box "Show PPPoE status in menu bar." If you make any change, again be sure to click the "Apply Now" button before leaving that preference pane.
Now switching from the "PPPoE" pane to the "Ethernet" pane, check that the "Configure:" selector is set to "Automatically" and if any change is made, click the "Apply Now" button.
Now switch the "Show:" selector from "Built-in Ethernet" to "Network Port Configurations" and drag the activated "Built-in Ethernet" configuration to the top of the list. Then drag the activated "AirPort" configuration to the position immediately under "Built-in Ethernet." Once again click the "Apply Now" button and that new setup is completed and activated. Your iMac will be connected to the router by ethernet and at the same time can use wireless to connect to a wireless printer or to another wireless computer.
After both new setups are in place, I suggest to boot from your Install Disc 1, get past the first (language selection) screen, and (after fully loading) the second screen will contain a "Utilities" pull-down in the menu bar. Open and select Disk Utility. On the left side of the box, select the top-most drive shown, on the right side select "First Aid" and then click the "Verify Disk" or "Repair Disk" button. Allow to run to completion. Run a second time to be sure. Do not run Disk Permissions Repairs, but instead quit the installer version of Disk Utility, quit the installer process, and restart to your usual startup disk, which you can re-select using "Startup Disk" also located in the "Utilities" pull-down where you found Disk Utility. After restarting, Repair Disk Permissions in a similar manner after opening the version of Disk Utility located in your Applications>Utilites folder.
Please don't hesitate to let me know the results of the above series of recommendations.
However, if all that doesn't make for some improvement, I'd think you'd want to check with your router maker's website (or the router supplier's website if it was supplied by your isp) to see if there's a firmware update that might be applied to your router. Such an update might help your router's encryption capabilities, or might provide updated Mac support for the Intel-based Macs.
Beyond that, I'd be calling AppleCare for support with your connection, since you're still within the 90 days of AppleCare phone support that is part of your new Mac purchase.

Slow Internet Speed after Leopard

I'm having a funny problem since the installation of Leopard and that is very slow internet browsing speed. But its not as simple as it sounds. I have another Windows PC on the same network; when its on mac internet speed is slow, when Windows PC is off the Mac internet speed if fast and normal.
I'm not alone in this problem. I read similar problems on Apple Gazette after installing Leopard. Any suggestions?

http://discussions.apple.com/message.jspa?messageID=6039643#6039643
Had to search for it. I'm having the same problem as you see by my post in this forum. I hope this works for me. I also happen to be in South Carolina. Small world.

Slow internet speed due to Marvell Yukon LAN driver

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