I am running IIS > 4.0 on Win2k. I have my session.gc_maxlifetime = 300 and my session.gc_probability = 100 in my php.ini file. But after waiting 300 sec. php does not delete my session files from my c:\winnt\tmp folder. All the files are there till I use the web site again to execute the session again and then it clears the files. Dosen't the Garbage collector should delete all the file after 300 sec?