I have some Windows Server 2003 machines and one of them has a file in C:\WINDOWS\Temp growing out of control in size. The file name is '9' (just a number, no extension) and grew to about 9gb in a short amount of time. There are other files similar on this server and a few of the other servers having names of just numbers and no file extensions (example: 3, 5, 7, 8, 10, 40, 60, 61, etc) but all others are OK in size... 0-400kb. When opened in notepad it just shows cryptic symbols but at the bottom of some I can read copyrights for Microsoft, Monotype, and Verisign. Can anyone tell me what is making this file and why it shot up in size? I can't run 'handle' on it because by the time I notice the file is growing the process already let it go. Thanks in advance.