Are ccache and distcc safe?

["Timothy M. Crider" <tim () g33x com>]

I'm not sure if this is the right list for this, if it's not please point
me in the right direction. Recently I started using two new programs that
have an incredible impact on my compile times on multiple machines. The
first ccache (http://ccache.samba.org) allows you to cache object files
created when compiling, and reuses the ones that would be exactly the
same. The next one is distcc (http://distcc.samba.org). This allows you to
farm out compiling to different machines on your list. The benefits of
these two packages are phenominal, but I'm wondering if there's any danger
in running these? In the distcc comparisons
(http://distcc.samba.org/compared.html), they say that more security
features will be added.

 Any thoughts?

  Tim