Managed users can't open specific pages in Firefox

I've got one heck of a weird one on my hands -
I manage a lab running 10.5.8 with Firefox 3 and I've got users complaining that websites like Gmail, Pandora & lynda.com won't function correctly under managed users. My admin account has no problems loading these pages but as soon as I log into a managed user, I run into these problems. These seats have Application Management but none that should be hindering Firefox - but I'm wondering if I have to click and drag some additional plugins/apps into the allowed list to let Firefox visit these sites? I've allowed Flash Player, but aside from that I can't fathom what would be hindering the browser. Any ideas?

Hello,
Many site issues can be caused by corrupt cookies or cache. In order to try to fix these problems, the first step is to clear both cookies and the cache.
Note: ''This will temporarily log you out of all sites you're logged in to.''
To clear cache and cookies do the following:
#Go to Firefox > History > Clear recent history or (if no Firefox button is shown) go to Tools > Clear recent history.
#Under "Time range to clear", select "Everything".
#Now, click the arrow next to Details to toggle the Details list active.
#From the details list, check ''Cache'' and ''Cookies'' and uncheck everything else.
#Now click the ''Clear now'' button.
Further information can be found in the [[Clear your cache, history and other personal information in Firefox]] article.
Did this fix your problems? Please report back to us!
Thank you.

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Can't open 2nd page with firefox after downloading a toolbar ...

Firefox works and the page opens up. But I can't open more than one page. Nothing happens at all. I downloaded yahoo toolbar that's when it happened. I uninstalled firefox and reinstalled it, but the problem still persists.
Is there anything I can do to fix this problem.
There is no yahoo toolbar now don't see it. And can't find it anywhere.
The Add-ons also does not open on firefox. Happened after I installed the yahoo toolbar and when tried to uninstall it, it didn't open. I tried again now Tools --> Add-ons (or Ctrl+Shift+A) and still doesn't open.
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The Reset Firefox feature can fix many issues by restoring Firefox to its factory default state while saving your essential information.
Note: ''This will cause you to lose any Extensions, Open websites, and some Preferences.''
To Reset Firefox do the following:
#Go to Firefox > Help > Troubleshooting Information.
#Click the "Reset Firefox" button.
#Firefox will close and reset. After Firefox is done, it will show a window with the information that is imported. Click Finish.
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Did this fix your problems? Please report back to us!

Help PC users can't open my iwebsite-is this a browser problem?

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When burning a CD from within iPhoto, it includes the iPhoto folder structure with thumbnails, originals, etc.
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I can not open more than one firefox page at a time

I usually run 2-3 firefox separate pages during in internet session. Now I can only open one page at a time.

Hello solardave, '''Try Firefox Safe Mode''' to see if the problem goes away. Safe Mode is a troubleshooting mode, which disables most add-ons.
''(If you're not using it, switch to the Default theme.)''
* On Windows you can open Firefox 4.0+ in Safe Mode by holding the '''Shift''' key when you open the Firefox desktop or Start menu shortcut.
* Or open the Help menu and click on the '''Restart with Add-ons Disabled...''' menu item while Firefox is running.
[[Image:FirefoxSafeMode|width=520]]
''Once you get the pop-up, just select "'Start in Safe Mode"''
[[Image:Safe Mode Fx 15 - Win]]
'''''If the issue is not present in Firefox Safe Mode''''', your problem is probably caused by an extension, and you need to figure out which one. Please follow the [[Troubleshooting extensions and themes]] article for that.
''To exit the Firefox Safe Mode, just close Firefox and wait a few seconds before opening Firefox for normal use again.''
''When you figure out what's causing your issues, please let us know. It might help other users who have the same problem.''
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Can't open a page in safari

Hi, I just tried getting rid of install mac? genio on my Mac Pro. and now I can't open a page in safari. it says safari can't open the page "google/co.uk" because the server where this page is located isn't responding.
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http://osxdaily.com/2014/12/30/re-download-os-x-mavericks-installer-from-os-x-yo semite-app-store/
http://osxdaily.com/2014/10/18/clean-install-os-x-yosemite/
http://liondiskmaker.com/
Mountain Lion is the second release of OS X to be delivered via the Mac App Store. Like with Lion, users can create their own bootable USB key installer to use as a recovery disk or to install Mountain Lion on multiple Macs without needing to download the 4GB installer multiple times.
Ars Technica has an excellent walk-through using either the Disk Utility application that is included on every Mac, or the newly updated Lion Diskmaker app that automates the process of creating a bootable install key.
The biggest catch to the whole process is to make a copy of the Mountain Lion installer before actually installing Mountain Lion, otherwise the installer will need to be redownloaded from the Mac App Store.
http://arstechnica.com/apple/2012/07/how-to-create-a-bootable-backup-mountain-li on-install-disk/
How to make a perfect bootable backup - and I suggest doing so early on, and then as needed so you have a known clean good system and a copy of your working system - using Carbon Copy Cloner:
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Can't open DrmRequestProcessingTaskFlow page on WDK.

hi all,
Can't open DrmRequestProcessingTaskFlow page.
Please let me know if you know about it.
I had operation according to the following procedure
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<Environment>
Workflow development Kit 11.1.2
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JDeveloper Studio 11.1.1.3.0
jdk1.6.0_23
<soa_server1.log>-----------------------------------------------------------------------------------------
####<2011/03/01 11時05分28秒 JST> <Info> <ServletContext-/workflow/DrmRequestProcessingTaskFlow> <EPM112001> <soa_server1> <[ACTIVE] ExecuteThread: '0' for queue: 'weblogic.kernel.Default (self-tuning)'> <<anonymous>> <> <> <1298945128324> <BEA-000000> <JspServlet error: Servlet unable to dispatch to the following requested page: The following exception occurred: java.io.FileNotFoundException: /index.jsp>
####<2011/03/01 11時05分28秒 JST> <Error> <HTTP> <EPM112001> <soa_server1> <[ACTIVE] ExecuteThread: '0' for queue: 'weblogic.kernel.Default (self-tuning)'> <<WLS Kernel>> <> <> <1298945128379> <BEA-101083> <Connection failure.
java.net.ProtocolException: Didn't meet stated Content-Length, wrote: '180' bytes instead of stated: '116' bytes.
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     at weblogic.servlet.internal.ServletResponseImpl.ensureContentLength(ServletResponseImpl.java:1431)
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     at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1455)
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     at weblogic.work.ExecuteThread.run(ExecuteThread.java:173)
>
####<2011/03/01 11時05分28秒 JST> <Error> <HTTP> <EPM112001> <soa_server1> <[ACTIVE] ExecuteThread: '0' for queue: 'weblogic.kernel.Default (self-tuning)'> <<WLS Kernel>> <> <> <1298945128479> <BEA-101104> <Servlet execution in servlet context "ServletContext@463389127[app:DrmRequestProcessingTaskFlow module:/workflow/DrmRequestProcessingTaskFlow path:/workflow/DrmRequestProcessingTaskFlow spec-version:2.5]"failed, java.net.ProtocolException: Didn't meet stated Content-Length, wrote: '180' bytes instead of stated: '116' bytes.
java.net.ProtocolException: Didn't meet stated Content-Length, wrote: '180' bytes instead of stated: '116' bytes.
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     at weblogic.servlet.internal.ServletResponseImpl.ensureContentLength(ServletResponseImpl.java:1431)
     at weblogic.servlet.internal.ServletResponseImpl.send(ServletResponseImpl.java:1505)
     at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1455)
     at weblogic.work.SelfTuningWorkManagerImpl$WorkAdapterImpl.run(SelfTuningWorkManagerImpl.java:528)
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     at weblogic.work.ExecuteThread.run(ExecuteThread.java:173)
Thanks in advance.
tom

Hey!
Did you manage to fix the problem?
Im also facing some problems installing the WDK kit.
-Leo

Safari can't open the page https

Frustrating to say the least. About a week ago whilst in Google mail, Safari failed to open an email instead it opened a page displaying the message Safari can’t open the page “https"//mail.google.com" etc
A page refresh also failed to open the page as did a my attempt to "Sign out".
Later that day the same problem occurred when I was using my bank's website. Oddly, when I turned to Camino and it too failed to open Googlemail and the bank's site. On my MacBook both sites worked from both applications. Add if I use a different user account on my Mac Pro, I don't have the problem.
My account is a “Standard” user. A logout and back in and it works again, a reboot and it works again but after a couple of hours the problem returns:
Any help welcomed as the following steps have failed to resolve the issue:
Empty Safari cache
Reset Safari
Uninstall Safari 4.0 beta and re-install Safari 3
Re-install Safari 4.0 beta
Swaped ethernet connection on my Mac Pro
Verify Disk Permissions
Repair Disk Permissions
Delete website history with "Adobe, Website Storage Settings panel"
Reset router
Rebooted Smoothwall
ClamXav found nothing
DNSChanger Removal Tool found nothing
iServices Trojan Removal Tool found nothing
removed .GlobalPreferences.plist
Thx
John

Hi John
Google Mail has been problematic on Safari 4. There are a number of threads in the Safari 4 Beta forum addressing the issue.
Thanks for posting the steps you have taken so far.
In a broader sense, security certificates are at the root of secured sites functioning. Those certificates are part of the Keychain file in HD>System>Library>Keychains. Perhaps, the keychain file needs repair. Open Keychain Access in your Applications>Utilities folder. In the Keychains Menu, select "Keychain First Aid">repair. If any errors appear, rerun until you get a clean pass.
If no errors appear, you may have to reestablish the keychain entries in your Standard account. Do you have administrative privileges assigned to that account?
Also, I'm not familiar with Smoothwall's operation/setup, however, some tweaking of its settings may be necessary. Here's some dated technospeak about Smoothwall and Safari.

I have stopped too many scripts in Firefox and I can't open any websites in Firefox anymore. I just get blank pages. What do I do now?

3 websites gave me this message:- "A script on this page may be busy, or it may have stopped responding. You can stop the script now, or you can continue to see if the script will complete." I chose to stop the script each time. However I have stopped too many scripts in Firefox and I can't open any website in Firefox anymore. I just get blank pages. What do I do now?

Certain Firefox problems can be solved by performing a ''Clean reinstall''. This means you remove Firefox and any leftover program files and then reinstall Firefox. Please follow these steps one by one:
#Download the latest Desktop version of Firefox from http://www.mozilla.org and save the setup file to your computer.
#After the download finishes, close all Firefox windows (click Exit from the Firefox or File menu) and confirm all upcoming messages.
#Now, uninstall Firefox by following the steps mentioned in the [[Uninstall Firefox from your computer#w_uninstall-firefox|Uninstall Firefox]] article.
'''IMPORTANT:''' On Windows, the uninstaller has the option to remove your personal data and settings. Make sure that you do '''not''' check this option; otherwise all of your bookmarks, passwords, extensions, user customizations and other Firefox [[Profiles|user profile data]] will be removed from your computer.
After uninstalling Firefox on Windows, delete the "Mozilla Firefox" program folder, located by default in one of these locations:
* '''(On 32-bit Windows)''' ''C:\Program Files\Mozilla Firefox''
* '''(On 64-bit Windows)''' ''C:\Program Files (x86)\Mozilla Firefox''
#Go to the Windows Start menu and click on "Computer".
#In the Explorer window that opens, double click Local Disk (C:) to open the C:\ drive.
#Find the "Program Files (x86)" folder or "Program Files" folder.
#* On 32-bit Windows, double-click the '''Program Files''' folder to open it.
#* On 64-bit Windows, you will see a "Program Files (x86)" folder AND a "Program Files" folder. Open the '''Program Files (x86)''' folder.
#Look for a '''Mozilla Firefox''' folder. If you find one, right-click it and select ''Delete'' and confirm that you want to move the folder to the Recycle Bin.
Now, go ahead and reinstall Firefox:
#Double-click the downloaded installation file and go through the steps of the installation wizard.
#Once the wizard is finished, choose to directly open Firefox after clicking the Finish button.
Please report back to see if this helped you!

Safari can't open certain pages, can't find the server

Hi
On both my iMac and iOS devices (all connected to same Airport TimeCapsule Wi-Fi network), certain web pages won't open in Safari (specific example www.amazon.co.uk).
Safari returns the message "Safari can't open the page "www.amazon.co.uk" because Safari can't find the server "www.amazon.co.uk"".
Opening other pages works fine.
Have tried Safari option "Clear History and Website data" (all history) without success. Have also tried rebooting the TimeCapsule (disconnecting power cord), also without improvement.
When trying to connect to the same website over 4G on iOS device, no problem occurs.
Can anyone help me?
All software on all devices are updated to latest versions.

Back up all data.
Unlock the Network preference pane, if necessary, by clicking the lock icon in the lower left corner and entering your password. Cllck Advanced, open the DNS tab, and change the server addresses to the following:
          8.8.8.8
          8.8.4.4
That's Google DNS. Click OK, then Apply.
In Safari, select
          Safari ▹ Preferences... ▹ Privacy ▹ Remove All Website Data
and confirm. If you’re using another browser, empty the cache. Test. Any difference?
Notes:
1. If you lose Internet access after making the above change to your network settings, delete the Google servers in the Network preference pane, then select the TCP/IP tab and click Renew DHCP Lease. That should restore the original DNS settings; otherwise restore them yourself. Remember that you must click Apply in order for any changes to take effect.
2. I don't use Google DNS myself, though I have tested it, and I'm not recommending it or any other DNS provider; the server addresses are offered merely for testing purposes. There may be privacy and technical issues involved in using that service, which you should investigate personally before you decide whether to keep the settings. Other public DNS services exist.

I can't open the page of youtube with my MacBookPro (OSX 10.7 Lion) through VPN in China

I am woking in mainland China, so I have to use VPN to open the page of youtube when I am in China. However, since November 2012, I can't open it again with my MacBook Pro (OSX10.7.5 Lion) through the VPN account. But I can open the page of youtube with my old PowerBook G4 (OSX10.4.11 Tiger) through the same VPN account. Why? Can anyone help me to fix this problem? Thanks

Dear Linc Davis, I can open the other pages except those are blocked by the Chinese government ( youtube, vimeo, etc ). But I don't understand why my PowerBook G4 running with Tiger and Saferi 4.1.3 can open those pages with the same connection and the same VPN account ( as I run both Macbooks side by side since this problem occurred ).
When I try to open youtube, it appears a blank page with the statement of
"Safari can’t open the page “http://www.youtube.com/” because the server unexpectedly dropped the connection. This sometimes occurs when the server is busy. Wait for a few minutes, and then try again."
Listed below are the information from Page Source:

<HTML>

<HEAD>
    <LINK rel=stylesheet type="text/css" href="page-load-errors.css">
    
    <STYLE>
        BODY {font-family:'Helvetica Neue';}
    </STYLE>
    
    <TITLE>Failed to open page</TITLE>
</HEAD>
<BODY>
<div class="error-container">
<div class="icon" alt="Safari Icon" role="img"></div>
<div class="text-container">

<P aria-hidden="true" class="error-title error-text-engraving">Safari can’t open the page <A id="help-button"></a></P>
<P aria-hidden="true" class="error-title error-text">Safari can’t open the page <A id="help-button"></a></P>
<P class="error-title error-text-inner-shadow">Safari can’t open the page <A aria-label="Help" role="button" id="help-button" class="" HREF='open-help-anchor:ibrw1071'></a></P>
</div>
<div class="text-container">

<P class="error-message error-text-engraving">Safari can’t open the page “http://www.youtube.com/” because the server unexpectedly dropped the connection. This sometimes occurs when the server is busy. Wait for a few minutes, and then try again.</P>
<P aria-hidden="true" class="error-message error-text">Safari can’t open the page “http://www.youtube.com/” because the server unexpectedly dropped the connection. This sometimes occurs when the server is busy. Wait for a few minutes, and then try again.</P>
<P aria-hidden="true" class="error-message error-text-inner-shadow">Safari can’t open the page “http://www.youtube.com/” because the server unexpectedly dropped the connection. This sometimes occurs when the server is busy. Wait for a few minutes, and then try again.</P>
</div>
</div>
</BODY>
</HTML>
Listed below are the information from Page Resources (page-load-errors.css) :
    This file has a UTF-8 BOM in it so it can be included from a UTF-16 page
    without specifying an explicit character set. When editing it, please be
    sure to preserve the BOM (first three bytes of the file, EF BB BF).
body {
    background-color: rgb(237, 239, 238);
    background-image: url(ErrorPageBackgroundTile.png);
    background-size: 100px 100px;
    text-align: center;
    -webkit-user-select: none;
    cursor: default;
.error-container {
    margin-top: 128px;
    padding-top: 0;
.error-container, .suggestion-container, .action-container {
    position: relative;
    width: 500px;
    min-height: 90px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 93px;
    padding-right: 93px;
    padding-bottom: 0;
.suggestion-container {
    margin-top: 25px;
    padding-top: 20px;
    background: url(ErrorPageDividerLine.png) top center no-repeat;
    background-size: 686px 1px;
.icon {
    position: relative;
    margin-left: auto;
    margin-right: auto;
    width: 113px;
    height: 120px;
    background-image: url(ErrorPageCompass.png);
    background-repeat: no-repeat;
    background-size: 113px 120px;
.reading-list-glasses {
    display: inline-block;
    position: relative;
    top: 2px;
    margin-right: 8px;
    width: 35px;
    height: 16px;
    background-image: url(ErrorPageReadingList.png);
    background-repeat: no-repeat;
    background-size: 35px 16px;
.error-text-engraving .reading-list-glasses, .error-text-inner-shadow .reading-list-glasses {
    /* Hide the duplicate Reading List glasses that are next to the envgraving and the shadow of the
    inner text. The images are just there for horizontal spacing of the components of the error text,
    we don't want to show them. */
    visibility: hidden;
html[dir=rtl] .icon {
    left: auto;
    right: 7px;
.text-container {
    position: relative;
    width: 100%;
    margin: auto;
    -webkit-font-smoothing: antialiased;
.error-text, .error-text-engraving, .error-text-inner-shadow
    margin: 0;
    word-wrap: break-word;
.error-text {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    background-repeat: repeat;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
.error-text-engraving {
    position: relative;
    top: 1px;
    width: 100%;
    color: white;
.error-text-inner-shadow {
    position: absolute;
    top: 1px;
    left: 0;
    right: 0;
    color: rgba(255, 255, 255, 0.25);
.error-title
    font-size: 18px;
    line-height:24px; /* This needs to be the same as the 2nd color stop position in -webkit-repeating-linear-gradient of error-title.error-text. */
    font-weight: bold;
.error-title.error-text {
    /* the position for rgba(124, 128, 130, 0.9) needs to be the same as the line-height in .error-title */
    background-image: -webkit-repeating-linear-gradient(rgba(79, 82, 85, 0.9) 0, rgba(124, 128, 130, 0.9) 24px), url(ErrorPageBackgroundTile.png);
.error-title.error-text-engraving {
    margin-top: 22px;
    margin-bottom: 25px;
.suggestion-form input
    font-size: 16px;
    margin: 0;
.suggestion-prompt
    margin-bottom: 12px;
.suggestion-prompt, .error-message {
    font-size: 14px;
    line-height: 17px;
.suggestion-prompt.error-text, .error-message.error-text {
    background-color: rgba(101, 105, 107, 0.9);
.suggestion-prompt.error-text-engraving {
    padding-bottom: 0px;
    margin-top: 6px;
.action-container {
    margin-top: 8px;
.action-container .suggestion-form {
    display: inline-block;
    margin: 5px;
    padding: 0;
.action-container .suggestion-form input {
    width: 132px;
    margin: 0;
.error-text a, .error-text-inner-shadow a {
    visibility: hidden;
.error-text-engraving a {
    z-index: 1;
    position: relative;
    top: -1px;
#help-button {
    display: inline-block;
    width: 25px;
    height: 24px;
    vertical-align: bottom;
    background-image: url(HelpButton.png);
    background-repeat: no-repeat;
    background-size: 25px 24px;
    -webkit-user-drag: none;
    margin-right: -35px;
    visibility: visible;
.error-text-engraving #help-button, .error-text #help-button {
    background-image: none;
    visibility: hidden;
#help-button:active {
    background-image: url(HelpButtonPressed.png);
html[dir=rtl] #help-button {
    margin-right: inherit;
    margin-left: -35px;
@media (-webkit-min-device-pixel-ratio:2) {
    body {
        background-image: url([email protected]);
    .suggestion-container {
        background-image: url([email protected]);
    .icon {
        background-image: url([email protected]);
    .reading-list-glasses {
        background-image: url([email protected]);
    .error-title.error-text {
        /* the position for rgba(124, 128, 130, 0.9) needs to be the same as the line-height in .error-title */
        background-image: -webkit-repeating-linear-gradient(rgba(79, 82, 85, 0.9) 0, rgba(124, 128, 130, 0.9) 24px), url([email protected]);
    #help-button {
        background-image: url([email protected]);
    #help-button:active {
        background-image: url([email protected]);
I don't know whether these information can help to solve the problem.
Thanks

I can´t open any page document. Please help

i can´t open any page document. Please help

You do need to give more information. What version of Pages, what version of OS X, have you ever been able to open Pages documents, have you made any changes to your Mac? Please be specific with versions, don't just say "I have the latest." Our crystal balls don't work over the internet.

TS3297 hi i was perfectly ordering from i tune all of a sudden i cant do that any more message coming up can not open the page please sort this out for me

hi i had a perfect account with itune all of a sudden stoped and constantly a message coming up can not open the page and since then i tred to change my password still cant buy any song please sort this out
thank you
rico jafarian

Mike,
Are any of your other applications going wonky, or is it just Logic?
I'm afraid I've never heard of this particular problem before, but if it were happening to me the first thing I would do is delete my "com.apple.logic.express.plist" file in Library>Preferences, then repair permissions in Disc Utility, and finally restart my computer. Then I would launch Logic and see if the problem has been corrected. It's amazing how much these two steps can accomplish.
If that doesn't resolve the issue I would launch Logic and go to Preferences>Audio Units Manager to see if all my plug-ins are properly validated.

MacBook Air can not open any pages in internet.

Hello, my new MacBook Air (just bought it) can not open any pages in internet. In >System preferences > Network it says that Wi-Fi has the self-assigned IP address and will not be able to connect to the Internet But Skype is working very OK on it at the same time... HELP... Also my old MacBook is working OK.

Be patient and wait for someone to reply. This is a user to user forum, we are all volunteers. Another thing you can do is contact AppleCare or bring your machine into an Apple Store or AASP. Perhaps they will have some suggestions.

Can't fix this - Safari can't open the page

i am connected to the Internet and some website will open others won't, it depends. I keep getting the message Safari can't open the page. It is specifically with the links, I have tested this on my other computer and I can get on the website fine. I have been looking on forums but have not found anything that works? Any ideas

Go step by step by step and test.
1. Power off the router. Unplug it from the wall. Wait a while.
    Plug it back to the wall. Power the router on. Wait until all the lights are lit properly. It will take a while.
    Restart the computer.
    Start up in Safe Mode.
    http://support.apple.com/kb/PH14204
2. Delete Caches.db
    Close all windows and quit all applications.
    Hold "option" key down and click "Go" menu in the Finder menu bar.
    Select "Library" from the dropdown.
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    Right click the Caches.db file and select "Move To Trash.
    Close windows and relaunch Safari.
3. Empty Caches
    Safari > Preference > Advanced
    Checkmark the box for "Show Develop menu in menu bar".
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    Click Develop and select "Empty Caches" from the dropdown.
4. Delete Cookies
    Safari > Preferences > Privacy > Cookies and other website data:
    Click the “Details” button.
    Remove all cookies except from Apple, your internet service provider and banks.
5. Safari > Preferences > Extensions
    Turn off Extensions if any and launch Safari again to test.
    Turn on those one by one and test.

Since upgrading to Yosemite I am getting frequently "safari can't open the page (blank) because the server unexpectedly dropped the connection this sometimes occurs when the server is busy. wait and then try again"

Since upgrading to Yosemite on my iMac I am frequently getting "safari can't open the page (blank) because the server unexpectedly dropped the connection this sometimes occurs when the server is busy. wait and then try again". This is with both a WiFi and Ethernet connection. The server is working fine from other devices using WiFi onto it such as iPhones, iPads, MacBook (which is also on Yosemite) so don't believe its an issue with the server.
I am also noticing page load very slowly when this problem is not occurring.

Please read this whole message before doing anything.
This procedure is a test, not a solution. Don’t be disappointed when you find that nothing has changed after you complete it.
Step 1
The purpose of this step is to determine whether the problem is localized to your user account.
Enable guest logins* and log in as Guest. Don't use the Safari-only “Guest User” login created by “Find My Mac.”
While logged in as Guest, you won’t have access to any of your documents or settings. Applications will behave as if you were running them for the first time. Don’t be alarmed by this behavior; it’s normal. If you need any passwords or other personal data in order to complete the test, memorize, print, or write them down before you begin.
Test while logged in as Guest. Same problem?
After testing, log out of the guest account and, in your own account, disable it if you wish. Any files you created in the guest account will be deleted automatically when you log out of it.
*Note: If you’ve activated “Find My Mac” or FileVault, then you can’t enable the Guest account. The “Guest User” login created by “Find My Mac” is not the same. Create a new account in which to test, and delete it, including its home folder, after testing.
Step 2
The purpose of this step is to determine whether the problem is caused by third-party system modifications that load automatically at startup or login, by a peripheral device, by a font conflict, or by corruption of the file system or of certain system caches.
Please take this step regardless of the results of Step 1.
Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards, if applicable. Start up in safe mode and log in to the account with the problem. You must hold down the shift key twice: once when you turn on the computer, and again when you log in.
Note: If FileVault is enabled in OS X 10.9 or earlier, or if a firmware password is set, or if the startup volume is a software RAID, you can’t do this. Ask for further instructions.
Safe mode is much slower to start up and run than normal, with limited graphics performance, and some things won’t work at all, including sound output and Wi-Fi on certain models. The next normal startup may also be somewhat slow.
The login screen appears even if you usually log in automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
Test while in safe mode. Same problem?
After testing, restart as usual (not in safe mode) and verify that you still have the problem. Post the results of Steps 1 and 2.

Managed users can't open specific pages in Firefox

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