Hi Helene, yes I am experiencing some issues too, but the advantages far outweigh these.
As far as partial access is concerned, I’m having no problems, you have to make sure that you activate BuddyDrive for all groups that you want to have this feature separately though …
It is true that it does not appear in the activity streams, but it is not important for my site, so there’s no problem there
Yes, with the basic CBox theme there are some layout issues. As far as I know though, the plugin author Imath and Bowe are both aware of these, and are working on a solution. It effects only the navigation on the profile page though, and as in my case, I am the only person uploading files, it doesn’t matter that much – it is annoying though, I must admit.
Apart from that though, if and when these issues are sorted out, it really is an asset to CBox, and the only file systems I’ve found that works.