Hi, Are there guidelines (or any empirical data) available how to determine how often a table should be vacuumed for optimum performance or is this an experience / trial-and-error thing? TIA -- Groeten, Joost Kraaijeveld Askesis B.V. Molukkenstraat 14 6524NB Nijmegen tel: 024-3888063 / 06-51855277 fax: 024-3608416 web: www.askesis.nl