Hi, We're using Exchange 5.5, sp4 on an NT 4, SP6 server, also using OWA for remote users which are few. It has plenty of RAM (640MB) and hard drive space (18gB). Today the server seemed really sluggish. After checking perf mon I saw that inetinfo.exe was at 98% CPU utilization. Stopping and starting the IIS Admin (& WWW publishing) seemed to solve the problem. Does anyone know what would cause inetinfo to go to high cpu utilization? Couldn't find anything on Microsoft's web site. Thanks. LH