Except for like 3 False Positives ... 2 by Avast and one by SAS, my computer has NOT been infected in like the last 4 or 5 years. So, I immediately got suspicious when right after the last Virus Signature Update last night, my IZArc File Zipping / Unzipping Utility was flagged as having that Trojan. Then when immediately after that I couldn't seem to get on the Forum for the first time ever, I was virtually sure something was up.
I only uninstalled IZArc last night. I just about never use it. I'll be reinstalling it tonight or tomorrow.
Then I'll just keep on moving along with avast on my 2 computers.

I had a much worse situation years ago with McAfee before switching to avast.
At that time, suddenly McAfee would no longer work well with my computer.
At that time, McAfee rendered my computer Un-Bootable. I proved it with like 3 Windows Reinstalls.
Every time I'd install McAfee, my computer's Bootup sequence would get screwed up.
For me, avast's incident last night was nowhere near McAfee's experience.
So, I'm sticking with avast! It's worked well for me for 2 years.