Wifi Connected, but very long delays upon opening the internet.

I have a mbp, from mid-2010 running mountain lion. About one month ago, I noticed that while I was still connected to my home wifi network, my internet access either became severely delayed or not working at all. Most commonly, I'll open Safari and it sits there for about 5 minutes before opening my page, or times out. It will then work for a bit, but it seems that if I leave it alone for awhile, I have to go throught that whole process again. I have 2 other macs, 2 iphones, ipods, 3 ipads and a pc which all do not do this... they work fine.
I've found a few other threads about something similar, but non seemed to have found solutions. I even went as far as to format/restore the hd on my mbp, and start over again with a fresh copy of mountain lion, but surprisingly this made no change.
This then lead me to believe there was something screwy happening between my router and mbp, so I switched it out to a backup router I had... no change here either. I restored both routers to factory defaults as well, but nothing.
And finally, I am able to connect to other wifi networks (friends', iphone hotspot) and browse the internet without issue.
Any thoughts??? I'm usually pretty good at troubleshooting this stuff, but this is making no sense to me :/
Thanks!

Click on the WIFI icon on your toolbar. Select Open Network Preferences. On the next screen make sure your location at the top is set to Automatic. Select WIFI on the left and click Adanced at the bottom. On the next screen make sure there's a checkmark under Remember network this computer has joined. Then select your home network and remove it. Hit OK on all those screens to confirm your changes. Then go to Finder and hit Go/Utilities and run the Keychain app. In there search for your WIFI network name you have at home and delete the entry for it. Confirm it's deleted by "X" out of the search field and typing the name in there again. If it doesn't find it anymore, you're good to go. Reboot the laptop via the Apple menu icon and Restart. When it comes back up, reconnect to your WIFI by clicking on the WIFI icon on your toolbar and selecting the name of your WIFI network from the list. Enter your password for it (you will be asked for it since you deleted the keychain entry for it). See if this resolves your issues.

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Photoshop CS4 upgrade was my Christmas present this year. I've been fighting this annoying "problem" ever since then...
I DO see this "problem" on my desktop PC, which is a Dell XPS-400 PC (with 2 GB of memory) running Windows XP (Media Center Edition) with SP3 installed. I DO NOT see this "problem" on my laptop, which is a Dell XPS-1530 (4 GB of memory) running Windows Vista SP1. I installed the Photoshop CS4 software exactly the same way on both machines, and I have the preferences set the same in both Photoshop and Bridge (and Camera Raw) on both machines.
Here's the situation: I first open Photoshop CS4 and then click on the Bridge icon in the Application Bar to open Bridge. When I use Bridge to open a photo, by either double-clicking the thumbnail, or right-clicking on the thumbnail and choose "Open" from the context menu, there is a 42 second delay before Photoshop opens the file. This long delay only occurs when opening the very first file.
Once that first image file is opened, double-clicking any thumbnail in Bridge will have it open in Photoshop CS4 in about 2 seconds. There will never be another long delay in having Bridge pass a file to Photoshop (or Camera Raw) again - until I close the applications and restart them. Once I restart the applications, the first photo takes 42 seconds to open....
This delay does not occur in opening the first image file if I right-click on the thumbnail in Bridge CS4 and choose "Open With" and manually choose Photoshop CS4.
Even if that is how I open the first (or several) image file(s), the first time I try to open a file from Bridge by double-clicking on a thumbnail (or right-click on a thumbnail and choose "Open") there will be that annoying 42 second delay before it opens.
It does not matter what the file format the first image file is (JPG, PSD, TIFF, or DNG), or what the file format of any subsequent image file is. As long as I do not close the Bridge and Photoshop applications, any subsequent file will be passed from Bridge to Photoshop in only a couple of seconds.
I have manually set the File Name Extensions in Windows XP, and in the Preferences in Bridge. Both have been set to open the file types listed above with Photoshop CS4.
I have uninstalled CS4, and have used two seperate Registry cleaners (CCleaner and jv16 Power Tools) before re-installing Photoshop CS4. This had no effect on this situation. I've run "chkdsk C: /r" several times, with no problems reported.
I have been searching through these forums for over 2 weeks now, and I have not seen anyone else report such a problem. I use my XP desktop much more than my Vista laptop, so I'd really like to fix this situation, but I don't know what else to try.
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Don,
Thanks for all of your suggestions. I tried them all, but the problem remains exactly as it was. To properly document my efforts:
In Bridge's Preferences, I Purged and Compacted the Bridge Cache, then changed it's location to D:\Bridge_Cache (D:\ is a second physical internal SATA drive).
I can not tell the exact size the Cache is set to, but the slider in Bridge's Preference is very close to the left end (10,000) of the slider.
The Windows Page File is set to 3072 MB min and 4096 max, and it is entirely on the D:\ drive. (I have 2GB of physical RAM in the PC.)
I defragmented the C:\ drive using Diskeeper 2008 Pro Premier, and even ran a Boot Time Defrag.
Rather than set some exclusions for Norton Anti-Virus, I jsut disbled that Virus checking program for all of my experiments.
I deleted the Bridge Preference File by holding down the Ctrl key as Bridge was restarted.
I even deleted the entire contents of the C:\Windows\Prefetch folder. I then rebooted the PC - twice. I then re-disabled Norton Anti-Virus.
The PC is approaching 3 years of age, but it is a 3.2 GHz Pentium D machine with 2 GB of RAM and two internal SATA drives. Every other application that I run on this machine responds reponsively. Again it is only the FIRST image file that I have Bridge hand off to Photoshop (or Camera Raw) that takes forever. The second and subsequent image files take a second or two.... That doesn't sound like it's an "old hardware" problem to me.
I'm willing to try anything else that you, or anyone else would like to suggest.
Thanks
Gregg Mack

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HT1386 My iOS device (Ipad mini) only appears in iTunes while cable-connected, but does not appear after diconnect the cable. How can I Wifi sync ?

Hi, My iOS device (Ipad mini) only appears in iTunes while cable-connected, but does not appear after diconnect the cable. How can I Wifi sync ?
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Whenever the computer and the iOS device are on the same network, the iOS device will appear in iTunes, and you can sync it....
But I can't see my iPad Mini in iTunes.
And my Ipad (Settings, General, iTunes Wifi Sinc) shows a message :" Sync will resume when xxx(my PC with iTunes) is available "...
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Hi Skydiver119, and tks for four interest.
I have done exactly as you say, but it does not work for me.
You indicated " Navigate to the info tab and scroll down. There'll be a check box for 'sync over wifi' or something to that effect. Check that box and sync to affirm your choice."
I navigated to Summary tab (not Info Tab) and checked "Sync with this ipad over Wi-Fi"
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and my iPad disappears from my iTunes screen.
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So, I can not sync via wi-fi
I appreciate if you can help me.

I'm from the USA but am on vacation in Brazil; I have a great WiFi connection but can not connect to the iTunes Store. Is this because I am out of the Country?

I'm from the USA but am on vacation in Brazil; I have a great WiFi connection but can not connect to the iTunes Store. Is this because I am out of the Country?

Thank you very much for your insight; I guess I had assummed that iPads/iPhones/iPods were here in Brazil and further assumed that the iTunes store would also be available.

Wifi Connected, but very long delays upon opening the internet.

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