bizarre problems with php_gd.dll and IIS

I am running sites that use both PHP4 and ASP. Both types of sites are running on IIS4. I've just recently started using the php_gd.dll to resize images in PHP. It appears to run fine, until the gd library generates any sort of error. As soon as that happens, all ASP pages on the entire server become inaccessible. HTML and PHP pages are still fine, as is everything else, but ASP just hangs. The only fix I've found is a complete reboot of the system. Needless to say, I am finding this incredibly frustrating. Has anyone seen similar behavior to this before, and does anyone have a solution. Thanks. Michael Hall Lead Web Developer / Database Engineer Prairie Fire Internet Technologies mike@pfbiz.com