[link=http://cityofphiladelphia.wordpress.com/2011/05/26/city-of-philadelphia-perimeter-security-systems-upgrade/]http://cityofphiladelphia.wordpress.com/2011/05/26/city-of-philadelphia-perimeter-security-systems-upgrade/[/link]rnrnThe Division of Technology (DoT) is performing routine maintenance.rnrnThe maintenance is scheduled for Wednesday, June 1, 2011 from 6:00 PM EDT to Thursday June 2, 3:00 AM EDT.