Thanks Bill. Yes I do this but it does not take long before it slows again. Is there a pref or something that needs replacing? Nobody else has responded, so I guess there is no answer to it, or that no one has had the same problem.
Cheers and thanks again
Jon

Run Activity Monitor from your Applications/Utilities folder and see if there's anything taking up lots of CPU time or disk space.

Have fun,
Shay
--
=========================== Shay  Telfer ================================
 Perth, Western Australia   Technomancer  The love of liberty is the love
 Opinions for hire              [POQ]     of others; the love of power is
 http://public.xdi.org/=Shay    fnord     the love of ourselves - Hazlitt