system
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The latest is 6.0.1035 prerelease at the moment
The release notes for that version do not reference this bug. I run a business and cannot just install stuff to see if it works. I bought Avast to have a reliable, unobtrusive virus scanner, not to put my data and time at risk by testing betas.
and "Yes, I had AVG free before and it didn't uninstall properly" is not exactly avast! issue...
And where does that quote appear in http://forum.avast.com/index.php?topic=74157.0 ? Hint: it doesn't. Nor did the person reporting that bug indicate that AVG failed to uninstall properly. That's your inference, as is the idea that that purported problem caused the user's symptoms.