"If you have a substantial number of Linux computers, it may be
cost effective to buy, configure and dedicate one or more computers
to the patch management task. For example, assume that you have a
network of 100 computers, and patch management requires that each
of these computers downloads 20MB per day. Downloading an
additional 2GB per day, every day, can be expensive on
business-level Internet connections.
"Some packages, such as those associated with the OpenOffice.org
suite, require several hundred MB to update..."