Q: yosemite problems

Uninstall the AVG malware software and restart. Use the AVG uninstaller or if there is not one to use:

Uninstalling Software: The Basics

Most OS X applications are completely self-contained "packages" that can be uninstalled by simply dragging the application to the Trash.  Applications may create preference files that are stored in the /Home/Library/Preferences/ folder.  Although they do nothing once you delete the associated application, they do take up some disk space.  If you want you can look for them in the above location and delete them, too.

Some applications may install an uninstaller program that can be used to remove the application.  In some cases the uninstaller may be part of the application's installer, and is invoked by clicking on a Customize button that will appear during the install process.

Some applications may install components in the /Home/Library/Applications Support/ folder.  You can also check there to see if the application has created a folder.  You can also delete the folder that's in the Applications Support folder.  Again, they don't do anything but take up disk space once the application is trashed.

Some applications may install a startupitem or a Log In item.  Startupitems are usually installed in the /Library/StartupItems/ folder and less often in the /Home/Library/StartupItems/ folder.  Log In Items are set in the Accounts preferences.  Open System Preferences, click on the Accounts icon, then click on the LogIn Items tab.  Locate the item in the list for the application you want to remove and click on the "-" button to delete it from the list.

Some software use startup daemons or agents that are a new feature of the OS.  Look for them in /Library/LaunchAgents/ and /Library/LaunchDaemons/ or in /Home/Library/LaunchAgents/.

If an application installs any other files the best way to track them down is to do a Finder search using the application name or the developer name as the search term.  Unfortunately Spotlight will not look in certain folders by default.  You can modify Spotlight's behavior or use a third-party search utility, EasyFind, instead.

Some applications install a receipt in the /Library/Receipts/ folder.  Usually with the same name as the program or the developer.  The item generally has a ".pkg" extension.  Be sure you also delete this item as some programs use it to determine if it's already installed.

There are many utilities that can uninstall applications.  Here is a selection:

    1. AppZapper

    2. AppDelete

    3. Automaton

    4. Hazel

    5. AppCleaner

    6. CleanApp

    7. iTrash

    8. Amnesia

    9. Uninstaller

  10. Spring Cleaning

For more information visit The XLab FAQs and read the FAQ on removing software.

No, it doesn't if you are a smart user:

Helpful Links Regarding Malware Problems

If you are having an immediate problem with ads popping up see The Safe Mac » Adware Removal Guide and AdwareMedic.

Open Safari, select Preferences from the Safari menu. Click on Extensions icon in the toolbar. Disable all Extensions. If this stops your problem, then re-enable them one by one until the problem returns. Now remove that extension as it is causing the problem.

The following comes from user stevejobsfan0123. I have made minor changes to adapt to this presentation.

Fix Some Browser Pop-ups That Take Over Safari.

 

Common pop-ups include a message saying the government has seized your computer and you must pay to have it released (often called "Moneypak"), or a phony message saying that your computer has been infected, and you need to call a tech support number (sometimes claiming to be Apple) to get it resolved. First, understand that these pop-ups are not caused by a virus and your computer has not been affected. This "hijack" is limited to your web browser. Also understand that these messages are scams, so do not pay any money, call the listed number, or provide any personal information. This article will outline the solution to dismiss the pop-up.

 

Quit Safari

 

Usually, these pop-ups will not go away by either clicking "OK" or "Cancel." Furthermore, several menus in the menu bar may become disabled and show in gray, including the option to quit Safari. You will likely have to force quit Safari. To do this, press Command + option + esc, select Safari, and press Force Quit.

 

Relaunch Safari

 

If you relaunch Safari, the page will reopen. To prevent this from happening, hold down the 'Shift' key while opening Safari. This will prevent windows from the last time Safari was running from reopening.

 

This will not work in all cases. The shift key must be held at the right time, and in some cases, even if done correctly, the window reappears. In these circumstances, after force quitting Safari, turn off Wi-Fi or disconnect Ethernet, depending on how you connect to the Internet. Then relaunch Safari normally. It will try to reload the malicious webpage, but without a connection, it won't be able to. Navigate away from that page by entering a different URL, i.e. www.apple.com, and trying to load it. Now you can reconnect to the Internet, and the page you entered will appear rather than the malicious one.

An excellent link to read is Tom Reed's Mac Malware Guide.

Also, visit The XLab FAQs and read Detecting and avoiding malware and spyware.

See these Apple articles:

  Mac OS X Snow Leopard and malware detection

  OS X Lion- Protect your Mac from malware

  OS X Mountain Lion- Protect your Mac from malware

  OS X Mavericks- Protect your Mac from malware

  About file quarantine in OS X

If you require anti-virus protection Thomas Reed recommends using ClamXAV. (Thank you to Thomas Reed for this recommendation.)

From user Joe Bailey comes this equally useful advice:

The facts are:

1. There is no anti-malware software that can detect 100% of the malware out there.

2. There is no anti-malware that can detect everything targeting the Mac.

3. The very best way to prevent the most attacks is for you as the user to be aware that

     the most successful malware attacks rely on very sophisticated social engineering

     techniques preying on human avarice, ****, and fear.

4. Internet popups saying the FBI, NSA, Microsoft, your ISP has detected malware on

    your computer is intended to entice you to install their malware thinking it is a

    protection against malware.

5. Some of the anti-malware products on the market are worse than the malware

    from which they purport to protect you.

6. Be cautious where you go on the internet.

7. Only download anything from sites you know are safe.

8. Avoid links you receive in email, always be suspicious even if you get something

    you think is from a friend, but you were not expecting.

9. If there is any question in your mind, then assume it is malware.

I mean being careful of what sites you visit or clicking on links without knowing the impact of doing so. Just be careful and think before you click. If you like pornographic sites (no problem with that) just be sure they are real sites. Nowadays, too many of those type of websites, email spam, etc. are not real. They are trying to lure you to click on a link in order to invade your privacy.

I managed to get the Trovi redirect plug in and that really slowed down the system and turned Safari 8 into a mess of popups .  I was hoping eset has a yosemite compatible anti-virus but they won't have it until 10/27/14.  Trovi very definitely can infect a mac.   I downloaded the free AVG software and removed  this "Conduit"  notorious software.  So the mac can very definitely get malware bundled with some foolish download I did.  I will uninstall the free AVG and buy the eset software when able but each has his own preferred antivirus.  It is not worth the time trying to fix Safari after it gets infected.  I will pay the $39 +  for antivirus .   By the way,  Safari 8 no longer has the  "Reset"   option in Preferences,  whereas Firefox and Chrome offer the options buried in their browers.  Go to  www.tomshardware.com or   www.lavasoft.com for removal and reset procedures on most common browsers. 

Yosemite has been agonizingly slow at times but I have a 2009 Imac.   Pages and Numbers are really striped down from the former versions prior to the apps that replaced the older versions.   This whole upgrade experience should be done only after Yosemite goes through a few updates, unless you have lots of patience.  There are no really compelling advances in Yosemite that made it worth the time invested,  but to each his own.

D@MIEN.L wrote:

 

Safari Extensions: ℹ️

  Searchme

You have accidentally installed Conduit adware, which most A-V scanners won't detect and those that do won't remove it.

Run AdwareMedic for the safest, most efficient way to identify all currently known adware and optionally delete it for you. It comes from one of this forum's most trusted malware guru's and a colleague of mine.

To find out why this happened and how to avoid it in the future see John Galt's How to install adware.

And one more thing. Update FlashPlayer from System Preferences->Flash to version 15.0.0.189. OS X is being updated as we speak to block the version you have installed.