[Grml] Virus scanner

[Mark]

> Jupp, this is - very probably - the problem. Virus scanning
> definitely needs some RAM.

Maybe so but in that case the proper behavior is a graceful exit.  An
error message like "out of RAM" can go to stderr.  It is still a bug to
hang and do nothing.

I do not know whether the bug is ClamAV itself, or GRML, or Linux, some
interaction.  But out of memory is a classic testing condition that a
lot of programmers neglect to handle.

Mark