[CentOS] ClamAV "clamscan" command using huge amount of RAM

Tue Apr 13 16:56:55 UTC 2010
Sean Carolan <scarolan at gmail.com>

We have a perl cgi script that accepts uploaded files and runs
clamscan on them.  While observing the system performance I noticed
that each clamscan process consumes up to 250MB of RAM.  Is this
normal for ClamAV?  This seems like an enormous amount of RAM, for
simply scanning one file for viruses.