quarantined by Anti-virus software as "decode regex" detecte

I received the following from my Host company.

FYI, today some files of "BLOCKED" account are auto quarantined by Anti-virus software as "decode regex" detected in those files.
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# (quarantined to /backup/cXsQuarantine/scan/BLOCKED/chronocontact.html.php.1333971753_1) Regular expression match = [decode regex: 1]:
'/home/BLOCKED/public_html/components/com_chronocontact/chronocontact.html.php'
# (quarantined to /backup/cXsQuarantine/scan/BLOCKED/cf_Authorize_dotnet.php.1333971753_1) Regular expression match = [decode regex: 1]:
'/home/BLOCKED/public_html/components/com_chronocontact/plugins/cf_Authorize_dotnet.php'
# (quarantined to /backup/cXsQuarantine/scan/BLOCKED/cf_paypal_api.php.1333971754_1) Regular expression match = [decode regex: 1]:
'/home/BLOCKED/public_html/components/com_chronocontact/plugins/cf_paypal_api.php'
# (quarantined to /backup/cXsQuarantine/scan/BLOCKED/jfscan.php.1333951107_1) Regular expression match = [\n(?!\s*(\/\/|\#|\*)).*/etc/passwd]
'/home/BLOCKED/public_html/administrator/components/com_admintools/akeeba/platform/jfscan/engines/archiver/jfscan.php'
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Can you offer some advice on whether this is a problem.

Thanks

Sorry. Forgot to mention.

Chrono Contact v3.2
Joomla 1.5.26

Thanks

Hi redmonds ,

Your virus scanner is being overly-cautious in this case. You need to white-list these ChronoForms files to stop them being reported.

Bob

Thnaks for the update.

Redmonds