The recurring theme throughout this problem has been 'duplex' 
The problem did indeed turn out to be a duplex problem.... but not at the
machine that was demonstrating the problem :(
The problem was further 'up stream' at the router...
Thanks everyone for you help....
Regards,
Jonathan
 ----------------------------------------------------------------------------
= Jonathan Nicholson - Team Leader : System Support "Special Projects"       =
= The Sanger Centre, Wellcome Trust Genome Campus, Hinxton, Cambs, CB10 1SA  =
= Email: jjn_at_sanger.ac.uk -=- Tel: 01223 834244 x4987  -=- Fax: 01223 494919 =
 ----------------------------------------------------------------------------
Received on Sat Mar 18 2000 - 12:40:36 NZDT