Windows CLI and task scheduler

I've written several command line scripts to run as scheduled tasks on a Windows 2000 Server machine. They run fine, no problems. However, the application log is filling up with errors stating that windows was unable to unload my registry profile. I know the PHP scripts are at fault because the errors are being recorded at the same intervals as my scheduled tasks. I installed UPHClean to cleanup the unloaded profiles but that simply doubles the number of log entries created. I was wondering if anyone else has run into this problem? Is this a task scheduler problem or a PHP problem? If it is a task scheduler problem, is there something I can do by exiting or closing differently in PHP? I have PHP 5.0.3 and am using php-win.exe Thanks, Dominic