First of all, congratulation rejetto for this excellent piece of software. I have just tried it and it seems to be great.
I don´t know if someone else have already asked for this but here it goes anyway.
1 - If you have already implemented check box for individual files, why not extend the functionality to archive the selected items only!?
2 - what about a button to log out? sometimes I need to do some tests and I have to delete cookies.
3 - Integration with AD would be great. I read one previous post and I know that you don´t know how to do it. happy to help with some c# code