Question about monster's speeds

[Peter Mardahl <peterm@soda.berkeley.edu>]

Some monsters have negative speeds.
These self-same monsters react in a nasty way to
the spell of paralysis.  They get faster.
Why should any monster have a negative speed?
Is this intentional?

If it isn't intentional, then either:
code should be changed so paralyze doesn't do this
or
the archetypes should be changed so that nothing
has a negative speed (or at least, no monsters
have negative speeds.)

Regards,

PeterM