Hi I am facing a problem thought that you might be able to help me out with this. I have installed IIS 5.0 on my box and I am using Tomcat Server along with this. And the redirector which you have written isapi_redirect.dll Now I am facing a weird problem which I am unable to pinpoint and is eating me out. The IIS is stopping and restarting regularly. I dont know why. The event log is throwing out messages like this ( I have attached the log file). So that is the problem. I am running some major requests on the Servlet side. Say a display of 300 rows using paging on the html page per each request. I have tried lots of sites and people. Havent been able to debug it. I am using a dll (cpp code debug version of that dll). This Isapi_redirect.dll Iam using here might be the cause of the problem that I am facing. The IIS is restarting like hell. No frequent time frame. Just like that it restarts itself and shuts itself down and restarts itself again. I am in a fix. I dont know where to start looking. I saw the event log. The no of restarts if large . Can you provide any insight why this might be happening. Iam attaching the event log. I am using Tomcat Server at port 8081 and the redirector (isapi_redirect.dll) is being used to redirect the servlet requests to the tomcat server. I appreciate your help, Thanks and regards, MaheshP.S. p.s : I am attaching the event log file.