Can’t delete file using ASP with IIS 5

My configuration are :
sql 7.0
Windows XP
IIS 5

I using delete method of FileSystemObject in ASP or VB DLL. But the IIS will go to halt (no response) when the execution reach “file.delete”
Even I embeded the coding into a dll for asp to call. I have restored my IIS and unload all patches at my PC but no any improvement. I have tried the code in Windows 2000 with IIS4 platform. It is work fine. Any suggestion?

Regards,