Firewall Randomly set to 'Allow All'?

Hi, I’ve been using Comodo for nearly a year now without any major problems, until a few days ago. Well it isn’t a significant problem, but it could be bad for the future.

Anyways, my problem is that randomly when I start Windows, Comodo is set to “Allow All” traffic, and I have the green icon in the system tray. It isn’t always, but it is frequent, about 1 in 5 times I start Windows. When I see it, I set it back to Custom settings, but why is Comodo randomly starting itself with “Allow All”?

I’m using Windows XP.