Returning to my PC after more than 8 hrs, the Comodo Personal Firewall system tray icon disappeared. I checked the Windows Event Viewer for Application or System entries for crashes, but no entries.
Then I clicked the CPF shortcut to view the GUI again and discovered that the activity log was purged (empty). I immediately gave my PC a mixed shot of anti- virus, spyware and rootkit scans. The system seems to appear clean though. So I presume, CPF was still protecting my PC.
The question is: how can this have happened? I never had my firewall disappear from the system tray before.
Next time, I will check for CPF processes in the Windows Task Manager before I draw the conclusion that CPF may have crashed. I was unpleasantly shocked to see that my CPF suddenly disappeared, though.
Maybe it is a good idea to have CPF create an entry in the Windows Event Viewer and/or its own Activity Log when the GUI crashes, also providing information what e.g. the processes were nevertheless still running and protecting the PC.