Extremely Urgent : Problems with header information

Hi all, We are building an Intranet portal using PHP4 which basically is an intranet-based office automation tool that helps us to build intranets for different companies by configuring and building simple custom applications (not involving business logic) using this tool. There are 5 areas in the homepage.The entire screen is a framset consisting of 2 main frames(vertically splitted) A and B. A is horizontally split into 3 frames C,D and E. and B is horizontally split into 2 frames F and G.It looks something like this CENTRAL AREA | TOP MENU ----------------------------------------- NAVIGATION BAR | MAIN MENU ---------------------| | | CONTENT AREA | | | | Problem Description: We are getting a CGI error on logon while displaying the homepage. It says : CGI Error The Specified CGI application misbehaved by not returning a complete set of HTTP headers.The headers it did return are : <nothing> It always comes in the Main menu area. This error occurs very frequently on visiting this homepage and is very random. If we right click on the specific frame and refresh it again, then the page gets loaded correctly. Note: There is an additional file menucontents*.php. This is a temporary file that contains some information about the actual menu that is displayed in the menu area as this is also dynamically generated menu. anybody has any ideas on what could be the problem?we are using IIS as the Web server. This is extremely urgent.If needed I can send the generated files and a snap shot of the error page. Thanks in advance, Rahul Desai