The qc.csi file located at C:\ProgramData\PrevXCSI\ is a TR/Agent.444416.A according to AntiVir Premium. Should I be worried? ^^ I guess not, but maybe it'll help by posting it.
Hello, No, you shouldn't be worried This file is an encrypted copy of the cleaned threats by Prevx. Threats are added into this mini-database and encoded with a simple algorithm which Avira is extracting, although the files are not malicious and cannot execute. You can either choose to ignore this file or you could remove it with Avira if really wanted, although this will make it impossible to restore removed threats from within Prevx.