There is a new application note that helps administrators secure their CME/UC500 systems and mitigate the threats of toll fraud.

Please visit:
http://www.cisco.com/en/US/products/sw/voicesw/ps4625/products_tech_note09186a00809dc487.shtml

The CME upgrade process has been made a lot easier with the introduction of new CME tar packages on the following page - http://www.cisco.com/cgi-bin/tablebuild.pl/ip-iostsp