I opened the File Signature Verification Tool (sigverif.exe) for the first time yesterday. An article I read claimed that the tool retuned a list of all unsigned drivers on a machine. The tool returned over 90 files. The Driver Signing Options dialog (System Properties dialog / Hardware tab / Driver Signing button), however, is set to "Warn," and I have not seen an "Unsigned Driver Warning" since I did a fresh install on my laptop about a month ago. Is the File Signature Verification Tool returning junk results or is my "Unsigned Driver Warning" not working. Incidently, I noticed that every unsigned file returned by the File Signature Verification Tool is in C:\WINDOWS\system32\spool\drivers.