Go Back   MacRumors Forums > Apple Hardware > Desktops > iMac

Thread Tools Search this Thread Display Modes
Old May 7, 2011, 02:10 PM   #1
macrumors newbie
Join Date: Sep 2010
Internet suddenly very slow

I have an iMac that's about 4 months old. Recently I've noticed my Internet speed has dropped from around 15mbps download to 4-5mbps. At first I assumed it was my ISP but my iPhone and iPad are both testing at the right speeds which tells me it's my mac. I've done a reboot and have also tried Chrome, Safari, and Firefox and they all come up with the same results. Any tips are greatly appreciated. FYI I'm hooked up with Verizon Fios.
cly88 is offline   0 Reply With Quote
Old May 17, 2011, 09:54 AM   #2
macrumors 604
miles01110's Avatar
Join Date: Jul 2006
Location: The Ivory Tower (I'm not coming down)
What is the topography of your network? I assume you have the incoming fiber connection to the modem, a router, and then the link to your iMac/iPhone/iPad. Is your iMac hardwired to your router?
Got a problem? Check here first.
miles01110 is offline   0 Reply With Quote
Old May 17, 2011, 09:41 PM   #3
Butler Trumpet
macrumors 6502
Join Date: May 2004
Location: Dekalb IL
Send a message via AIM to Butler Trumpet
Try this first... open System Prefrences, go to Network, then at the top where you see "Location" Create a new location. Make sure you click "Apply" with the new location selected. How is your speed now?

The next thing I would try, would be to launch "Network Utility" from the Utilities folder.... then go to "Ping". Now, type in www.google.com and set the number of pings to 1000 (or some big number) .... Let it do its thing and then at the bottom it should tell you how many pings came back. Anything around 98% or higher is acceptable. Anything below 90% is problematic.

Could also be a number of other things.... Bad OS, Bad User Account... and worst of all, bad AirPort Card.

Good Luck!
ACMT - Apple Certified Macintosh Technician
Mac OS X Certified 10.5, 10.6, 10.7, 10.8, 10.9, 10.10
iOS Hardware and Software Certified
Butler Trumpet is offline   0 Reply With Quote
Old May 18, 2011, 04:15 AM   #4
John T
macrumors 68020
John T's Avatar
Join Date: Mar 2006
Location: UK.
Don't blame your iMac! Most likely a network problem. Have you tried a speed test? Your iPad and 'phone are, most likely , on a different network/ISP.
John T is offline   0 Reply With Quote
Old May 18, 2011, 04:36 AM   #5
macrumors 68030
NutsNGum's Avatar
Join Date: Jul 2010
Location: Glasgow, Scotland
You haven't moved it have you? I put mine in a corner once and the Internet connection more or less died on account of the receiver being behind the little black apple on the back.
NutsNGum is offline   0 Reply With Quote
Old Sep 26, 2011, 10:13 AM   #6
macrumors regular
Join Date: Sep 2005
Location: New Jersey
I suddenly have this problem with my iMac. Its a late 2007 model, has always worked fine. Then I get FiOS and internet speeds are woefully slow. My other Mac's and PC's in the house do not have this problem, just the iMac.

When I first got FiOS I found this problem, but I was able to mitigate it by adding public DNS servers to my network settings on the iMac. This seemed to speed it up quite a bit, but about a month ago it got slow again all of a sudden. I've searched all over for a solution but the only thing I can find is that the FiOS router is crap and doesn't like Mac's. Which is a garbage answer cause my other Mac's work just fine, just the iMAc doesn't.

One thing I have been able to discover is when I ping the router with the iMac, it is very slow. On a home network i would expect a response in less than 10ms, but with my iMac its usually in the range of 100-200ms. Anyone know what could be causing this all of a sudden?
WRXHokie is offline   0 Reply With Quote
Old Oct 17, 2011, 10:11 PM   #7
macrumors newbie
Join Date: Feb 2008
Start From here: my internet very slow speed mac.

Start From here: my internet very slow speed mac.
Slow internt can by because DNS problem OR app ,
Start from Console -> All Messages,
In my case I found a program HideMyIp (hidemyipdaemon {errXXX})
I remove the program and fix the problem!!

Good Luck
golicoke is offline   0 Reply With Quote

MacRumors Forums > Apple Hardware > Desktops > iMac

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Similar Threads
thread Thread Starter Forum Replies Last Post
Games suddenly running slow chipnchips iMac 0 Mar 5, 2014 05:17 AM
Suddenly SUPER slow. dozens Buying Tips and Advice 3 Oct 28, 2013 12:17 PM
Internet speed suddenly slow cragga Mac Basics and Help 2 May 11, 2013 05:33 PM
My iMac is suddenly running slow! ImacUser212 iMac 19 Mar 25, 2013 02:59 AM
MBP Suddenly slow. Please Help. GinsterMk3 MacBook Pro 3 Jun 13, 2012 02:11 PM

Forum Jump

All times are GMT -5. The time now is 10:11 AM.

Mac Rumors | Mac | iPhone | iPhone Game Reviews | iPhone Apps

Mobile Version | Fixed | Fluid | Fluid HD
Copyright 2002-2015, MacRumors.com, LLC