This morning my PC was stuck in an infinite reboot loop. I didn't have much time to look at it at the time, but this afternoon I had a look at it and from the minidump it became clear Avast was the problem. I have since uninstalled Avast and, indeed, my PC boots like a champ again. I would have attached the minidump file here for your viewing pleasure, but unfortunately it seems it is not allowed here.
I love Avast, and I appreciate you making it available for free. But it putting my PC into an infinite reboot loop is a bit of a downer. So please let me know if it is safe to install again.
Thanks!