If you are worried, how about logging out ?
(Or are we only interested in complicated solutions ?)
--
Alain Williams,
Root Computers Ltd, London, England.
<UK-net>!{hrc63|qmc-cs|edai|kcl-cs|ukc|glasgow|ist|jmccfr|west44
ubu|rlvd|pmllab|stc}!root44!addw
{unisoft|deccra}!root44!addw
root44!{rootcl|rootis}!addw