I installed AIS 8 on the Win2k Server Domain Controller. Subsequently, I started getting "irpstacksize" errors and could no longer use Group Policy. The GP's were no longer running and I couldn't edit them. It said I didn't have enough space. Once I uninstalled AIS 8 everything went back to normal. Is this a known problem? If so, is there a fix or will there be a fix? I was preparing to do an image of the DC before upgrading to 2003 domain just in case problems occured. Any help or suggestions are appreciated. Thanks!