I've already use NOD32 version 2.5. Yesterday my mates put a flash drive ie thumb drive to my pc (WinXP Pro SP2) and copy some files to my computer. Then he put the thumb drive again in my friend computer but her antivirus alert that a virus/trojan Kangen.B was found. My friend use Pc-Cillin Internet Security 2006. Then he plug out the thumb drive and install to me again but my NOD32 not even detect the virus. I plug out the thumb drive and plug in to my other friend that use also PC-Cillin 2004. Yes a virus alert pop-up and this time it said Rontokbro.B. I search for the internet and found that yes there is a trojan called Rontokbro.B and Kangen.B maybe its origin from Indonesia.Symantec and McAfee also have the description about that trojan/virus. So I really not satisfied and again I plug-in the USB thumb drive to my pc and select manual scan.The virus database is already update.Again,NOD32 failed to detect the virus.Then I try to check advanced heuristic and scan the thumb drive.Yes, NOD32 can detect it. NOD32 cannot clean but delete the file kangen.exe.So I satisfied.I plug-off the USB thumb drive and plug-in again to my friend PC.I'm shocked because her antivirus again detect the virus Kangen.B and even the kangen.exe suddenly appear in her thumb drive..Then I try to clean the virus/trojan from her PC and wow its works.Pc-Cillin Internet Security 2006 can clean that virus.I plug-off the thumb drive and plug-in to my pc again.Scan with NOD32 advanced heuristics and seem ok..no virus.I plug off the thumb drive and again plug-in to my friend PC that using pc-cillin 2004.No virus alert pop-up appear.Seem ok.I plug of and again plug-in to the one that use Pc-Cillin 2006 Internet Security and yes no virus alert pop-up.The problem is why NOD32 cannot detect this virus but when scan using advanced heuristic it can detect but failed to clean so it delete.Another is I think the virus is not die..because after NOD32 delete kangen.exe the file appear again in my friend virus alert.Can anyone help me solve this? I search over the Internet and found that Trend Micro (Pc-Cillin name this virus as Rontokbro.A to variant B. And this virus also named Kangen before it change to Rontokbro.