If you need a script that queries a list of servers for how many days since reboot
and then generates a report to a HTML-file with graphs and everything...

visit KiXtart HelpDesk and look for System Uptime in the Scripts section or
download http://www.kixtart.org/helpdesk/download/Uptime.zip

/Brian

Sorry I can't post the script here since it contains html-formatting like body...