He analizado el ordenador (que no lo había hecho antes, perdón), y me ha encontrado 7 gusanos Bagle:
# version=4
# OnlineScanner.ocx=1.0.0.635
# OnlineScannerDLLA.dll=1, 0, 0, 79
# OnlineScannerDLLW.dll=1, 0, 0, 78
# OnlineScannerUninstaller.exe=1, 0, 0, 49
# vers_standard_module=2899 (20080225)
# vers_arch_module=1.064 (20080214)
# vers_adv_heur_module=1.064 (20070717)
# EOSSerial=507d2777986e0c42b4d523281155f805
# end=finished
# remove_checked=true
# unwanted_checked=true
# utc_time=2008-02-25 03:28:05
# local_time=2008-02-25 04:28:05 (+0100, Hora estándar romance)
# country="Spain"
# osver=5.1.2600 NT Service Pack 2
# scanned=169797
# found=7
# scan_time=3309
# nod_component=NOD32MOD_WINNT_ENGLISH_BASE Build:0x11081610 (NOD32 For Windows NT/2000/XP/2003/Vista/x64 - Base)
# nod_component=NOD32MOD_WINNT_ENGLISH_INET Build:0x11081610 (NOD32 For Windows NT/2000/XP/2003/Vista/x64 - Internet support)
# nod_component=NOD32MOD_WINNT_ENGLISH_STANDARD Build:0x11081610 (NOD32 for Windows NT/2000/XP/2003/Vista/x64 - Standard component)
C:\Documents and Settings\PC\Configuración local\Archivos temporales de Internet\Content.IE5\2MSYBNP4\b64_1[1].jpg Win32/Bagle.LY worm (unable to clean - deleted) 00000000000000000000000000000000
C:\Documents and Settings\PC\Configuración local\Archivos temporales de Internet\Content.IE5\2MSYBNP4\b64_1[2].jpg Win32/Bagle.LY worm (unable to clean - deleted) 00000000000000000000000000000000
C:\Documents and Settings\PC\Configuración local\Archivos temporales de Internet\Content.IE5\3BHXRY56\b64_31[1].jpg Win32/Bagle.MW worm (unable to clean - deleted) 00000000000000000000000000000000
C:\Documents and Settings\PC\Configuración local\Archivos temporales de Internet\Content.IE5\GK3B9ILJ\b64_1[1].jpg Win32/Bagle.LY worm (unable to clean - deleted) 00000000000000000000000000000000
C:\Documents and Settings\PC\Configuración local\Archivos temporales de Internet\Content.IE5\GK3B9ILJ\b64_31[1].jpg Win32/Bagle.MW worm (unable to clean - deleted) 00000000000000000000000000000000
C:\Documents and Settings\PC\Configuración local\Archivos temporales de Internet\Content.IE5\GK3B9ILJ\b64_31[2].jpg Win32/Bagle.MW worm (unable to clean - deleted) 00000000000000000000000000000000
C:\Documents and Settings\PC\Configuración local\Datos de programa\ixwovpcrq.exe ixwovpcrq Win32/Bagle.NA worm (unable to clean - deleted) 00000000000000000000000000000000