“…Internet users, practitioners, academics and Web designers consistently complain that the Internet is frustratingly slow (Dellaert and Kahn, 1999;Selvidge, 1999;Weinberg, 2000;Rose et al, 1999;Sears et al, 1997a, b;Georgia Tech Research Corporation, 1998;Johnson, 1998;BBC News 2002). Although the Web doubles its delivery speed every two years, the amount of traffic on the Net also doubles in a similar time period (Dembeck, 1999;Nua, 1999;Destounis et al, 2001). This places ever increasing demands on Web servers (Kothari and Claypool, 2001) while Web users are generally reluctant to upgrade their connection speed (Weinberg, 2000).…”