I'm using now PGuard for a while (changed free for full-version), I like the program but sometimes it annoys me: to-day two seemingly unnecessary windows came up and blocked, among others, the screensaver. One window asked to permit or deny defrag.exe, the other one did the same with dfrgntfs.exe. I had to do sómething because Firefox wouldn't start anymore. Why are, all of a sudden, these exe-files so important without any defrag-activity around? Some more examples: I could only use the text-tool in Photoshop after enabling 'Install Global Hooks' under the protection tab. SnagIt wouldn't work either in Outlook Express without enabling 'Global Hooks'. After installing PGuard my Wacom-tablet was suddenly very slow, same story with 'Global Hooks'. I'm just wondering why? Is there any necessity for these little annoyances?