Hello, I have now an sample of Worm.Mydoom.Gen-unp, which is not detected by latest clamav 0.81 and is detected by older version (0.80). See this: [root@virtual ondrejj]# freshclam ClamAV update process started at Thu Jan 27 20:28:09 2005 main.cvd is up to date (version: 29, sigs: 29086, f-level: 3, builder: tomek) daily.cvd is up to date (version: 689, sigs: 775, f-level: 4, builder: diego) [root@virtual ondrejj]# clamscan --no-summary /tmp/Swash.C /tmp/Swash.C: OK [root@virtual ondrejj]# on another machine with older clamav: [ondrejj@ns tmp]$ clamscan --no-summary ./Swash.C LibClamAV Warning: **************************************************** LibClamAV Warning: *** This version of ClamAV engine is outdated. *** LibClamAV Warning: *** Please update it IMMEDIATELY! *** LibClamAV Warning: **************************************************** ./Swash.C: Worm.Mydoom.Gen-unp FOUND [ondrejj@ns tmp]$ SAL _______________________________________________ http://lists.clamav.net/cgi-bin/mailman/listinfo/clamav-devel