Any suggestions?

Download Avast Free Mac Security for OS X and protect your Macintosh with the best antivirus & security app. Download, Install or Update Avast Free Mac Security! Macs need protection, too Mac OS X is considered one of the most secure operating systems available. My reg'ed copy of avast (latest version) worked fine under 10.5. I've upgraded to 10.6 and expected some software to have bugs or not work until there upgraded, but avast! On my mac has a really annoying one.

Yes. Remove the worthless Norton product.

Mac OS X versions 10.6.7 and later have built-in detection of known Mac malware in downloaded files. The recognition database is automatically updated once a day; however, you shouldn't rely on it, because the attackers are always at least a day ahead of the defenders. In most cases, there’s no benefit from any other automated protection against malware.

The most effective defense against malware is your own intelligence. All known Mac malware takes the form of trojans that can only operate if the victim is duped into running them. If you're smarter than the malware attacker thinks you are, you won't be duped. That means, primarily, that you never install software from an untrustworthy source. How do you know a source is untrustworthy?

• Any website that prompts you to install software, such as a “codec” or “plug-in,” that comes from that same site, or an unknown site, is untrustworthy.
• A web operator who tells you that you have a “virus,” or that anything else is wrong with your computer, or that you have won a prize in a contest you never entered, is trying to commit a crime with you as the victim.
• “Cracked” versions of commercial software downloaded from a bittorrent are likely to be infected.
• Software with a corporate brand, such as Adobe Flash, must be downloaded directly from the developer’s website. No intermediary is acceptable.

Avast Free Antivirus

Follow these guidelines, and you’ll be as safe from malware as you can reasonably be.

Never install any commercial 'anti-virus' products for the Mac, as they all do more harm than good. If you need to be able to detect Windows malware in your files, use ClamXav -- nothing else.

To install Avast Security or Avast Premium Security (previously Avast Security Pro), follow the instructions below:

Install Avast Security

Free Antivirus For Mac

1. Download the Avast Security for Mac setup file by clicking the button below. Download Avast Security for Mac
2. Double-click the downloaded setup file avast_security_online.dmg (by default, in your downloads folder).
3. Double-click Avast Security.
4. Click Continue to determine if Avast Security can be installed.
5. Click Continue.
6. Click Continue to confirm that you have read the Avast End User License Agreement.
7. Click Agree to confirm that you accept the terms.
8. Click Install. Alternatively, if you would like to make changes to the default setup, click Change Install Location... or Customize.
9. If prompted, use your Touch ID to grant permission for the installation, or click Use Password..., then enter your Administrator password and click Install Software.
10. Click Close.

Avast Antivirus For Mac Reviews

Avast Security is installed on your Mac. To start using Avast Security, click Continue With Free. If you have purchased a subscription for Avast Premium Security (previously Avast Security Pro), refer to the following article for detailed activation instructions:

• Avast Security 14.x for Mac
• Avast Premium Security 14.x for Mac

Avast Antivirus For Mac Review

• Apple macOS 10.14.x (Mojave)
• Apple macOS 10.13.x (High Sierra)
• Apple macOS 10.12.x (Sierra)
• Apple Mac OS X 10.11.x (El Capitan)
• Apple Mac OS X 10.10.x (Yosemite)