Please post the path/location of the file that A-squared is detecting the Trojan.Win32.Regrun!IK.
Also, try to scan using Kaspersky Online Scanner: http://www.kaspersky.com/virusscanner to see if there's really a trojan in your system.
Another trojan scanner is TrojanHunter which is 30 days fully functional anti-trojan:
I use a-squared as one of my anti-malware programs. In the last 3 days, it has found a Trojan called Trojan.Win32.Regrun!IK and has labeled it as High Risk. I quarantine the Trojan, but when a-squared runs again, it detects the Trojan again.
Is my PC just getting reinfected with this Trojan? If so, how can I find out how I'm getting infected and what I can do? BTW, Norton 360 Version 2 and SUPERAntiSpyware Free Edition do not find this Trojan at all.
I'm running Windows XP SP 2. Thanks.