I am in a workshop in South Africa, and before I begin in exploring WebDAV, I installed HowToComponents sample, then suddenly While I am exploring WebDAV administration I discovered WebDAV is not working. I tried to resolve the problem but I failed where I was thinking the problem may be from WebDAV configuration or from Folders component. So I returned to the last snapshot of my lab virtual machine.
The story not ended yet, I discovered on of the attendees is facing the same problem and of course I should resolve it - I can not escape :)-
I was sure that the problem is trivial one but when I discovered that problem is from SecurityFilter component (part of HowToComponents bundle), I wanted to kill myself because I face the same problem before from 1.5 years.
Don't use SecurityFilter sample component with WebDAV