hey there.. my pc s infected with TROJAN, it was not detected by kaspersky intenet security so i replaced it with avira personal, but avira just detects d malware but wasnot able to completely delete the bug. I googled a better AV and found out that we can scan our system with BIT DEFENDER online scan. it wasnt able to detect the malware, but after running avira, the trojan is gone. or is it? ive read n a forum that its not good 2 have 2 anti virus installed, much more run at the same time, as it would damage the system.. is it true? but Bit defender was not installed, it was just run.. please clear things out.. am worried..tnx.