According to the documentation, Optional attribute 'size' specifies the maximum number of items in queue, if it is execeeded the oldest one is removed Is this meant to imply that by default, absent this attribute, queues are boundless? Or is there a default size anyway? Thanks, -- Alex Balashov - Principal Evariste Systems LLC 1170 Peachtree Street 12th Floor, Suite 1200 Atlanta, GA 30309 Tel: +1-678-954-0670 Fax: +1-404-961-1892 Web: http://www.evaristesys.com/