what's this VC noise?

[Eric H]

Can anyone tell me why noise like this appears on the virtual console
where I started mailscanner? It doesn't appear to be actually waiting for
the ([Y]es/[N]o/[A]ll).

# Proceed with disinfection of
./g8C3OFpc026394/periodd.com ([Y]es/[N]o/[A]ll) ?Proceed with disinfection
of ./g8C3RHpc026605/talent.com ([Y]es/[N]o/[A]ll) ?Proceed with
disinfection of ./g8C3bSpc027353/continue.com ([Y]es/[N]o/[A]ll) ?
# Premature padding of base64 data at
/usr/local/lib/perl5/site_perl/5.8.0/MIME/Decoder/Base64.pm line 109.

Eric