Pinging Question

Hello, I work for an organization that has about 100 firewalls deployed. We currently use hobbit to ping all the interfaces to see if they are up. Out of about 500 interfaces we are pinging there are about 10 that will show up as being down on the hobbit web pages but when you ping from the hobbit server manually you get a response that they are up. Any ideas as to why they would show up as down on the web pages but you get responses from manual pings. Is there somethign different about the pings used for the webpages?

AOL now offers free email to everyone. Find out more about what's free from AOL at AOL.com.