Bitdefender

Bonjour,
je possède bitdefender comme antivirus. Lors des analyses approfondies, il y a des fichiers qui semblent être infectés, mais un message m'indique qu'aucune action n'a pu être entreprise, car ces fichiers font partie des archives. Ai-je des craintes à avoir quant à la sécurité de mon PC ?
Je joins le journal du rapport, peut-être que cela pourra éclairer le sujet.
Merci d'avance.

<?xml version="1.0" encoding="utf-8"?>
<?xml-stylesheet type="text/xsl" href="C:\Program Files\BitDefender\BitDefender 2009\uiscan_log.xsl"?>
<ScanSession creator="BitDefender Internet Security 2009" version="BitDefender UIScanner v.12" creationDate="11:25:25 07/04/2009" installPath="C:\Program Files\BitDefender\BitDefender 2009" originalPath="C:\Documents and Settings\All Users\Application Data\Bitdefender\Desktop\Profiles\Logs\deep_scan\1239096325_1_02.xml" scanClient="C:\Program Files\BitDefender\BitDefender 2009\bdagent.exe" taskName="Analyse approfondie">
<ScanOptions
showWarnings="1" >
<ScanPaths>
<path id="0000">C:\</path>
<path id="0001">D:\</path>
</ScanPaths>
<ScanObjects
scanViruses="1"
scanAddware="1"
scanSpyware="1"
scanApplications="1"
scanDialers="1"
scanRootkits="1"
/>
<TargetSelection
heuristicScan="1"
scanArchives="1"
scanRegistryKeys="1"
scanRegistry="1"
scanCookies="1"
memoryProcesses="1"
scanBootSectors="1"
scanEmail="0"
scanAllFiles="1"
scanPackedFiles="1"
scanSubfolders="1"
includeExtensions=""
excludeExtensions=""
/>
<TargetProcessing
infectedAction="3"
suspiciousAction="1"
hiddenAction="1"
/>
</ScanOptions>
<EngineSummary
archivePlugins="45"
mailPlugins="6"
scanPlugins="13"
totalSignatures="2828481"
systemPlugins="5"
unpackPlugins="7"
/>
<ScanSummary
scannedItems="209418"
passProtItems="0"
infectedItems="3"
suspiciousItems="0"
resolvedItems="0"
unresolvedItems="3"
scannedArchives="7986"
bootSectorCount="4"
scannedDirectories="6738"
inputOutputErrors="0"
virusesNumber="2"
scanTime="02:03:59"
filesPerSecond="28"
>
<FileSummary
scanned="208297"
archives="7986"
packed="10122"
infected="3"
suspicious="0"
resolved="0"
deleted="0"
moved="0"
copied="0"
/>
<RegistryKeySummary
scanned="1039"
infected="0"
suspicious="0"
/>
<CookieSummary
scanned="27"
infected="0"
suspicious="0"
/>
<ProcessSummary
scanned="55"
infected="0"
suspicious="0"
/>
<MailSummary
scanned="0"
infected="0"
suspicious="0"
/>
</ScanSummary>
<ScanDetails>
<AffectedItem itemType ="File" path="C:\WINDOWS\pack.epk=](NSIS 2g)=]lzma_solid_nsis0006" threatType="addware" threatName="Adware.Navipromo.AO" action="none" finalStatus= "infected" error= "infected archive"/>
<AffectedItem itemType ="File" path="C:\WINDOWS\pack.epk=](NSIS 2g)=]lzma_solid_nsis0015=](NSIS g)=]lzma_solid_nsis0002" threatType="addware" threatName="Adware.Navipromo.AO" action="none" finalStatus= "infected" error= "infected archive"/>
<AffectedItem itemType ="File" path="C:\WINDOWS\pack.epk=](NSIS 2g)=]lzma_solid_nsis0008" threatType="virus" threatName="Trojan.Generic.183521" action="none" finalStatus= "infected" error= "infected archive"/>
</ScanDetails>
</ScanSession>