I've mentioned before in other posts about the DAO being considered a partnership. Here is more detail on the problems "a general partnership, unless properly formalized or a deliberately created structure, is a very bad thing.
Among other things, the members of a general partnership can end up jointly and severally liable on a personal basis for partnership obligations."
"a big concern to a DAO creator or participant regardless. Lacking assets or a legal form, I expect that a court would see the entity that isn't really an entity as a fiction and could allow a lawsuit to proceed against the individual members."
"To sue an unincorporated DAO, you'd start with its members.
If you can't find members, you sue the DAO's first mover: the person or entity that first created the DAO.
And how do you avoid this? If you're creating a DAO, consider whether this evolutionary structure might benefit from some basic corporate structure, and whether doing so really limits the DAO's functionality in a meaningful fashion."
Find more details in the following:
http://www.coindesk.com/how-to-sue-a-decentralized-autonomous-organization/
Links to other DAO problem post mentioning partnerships:
https://steemit.com/crypto-news/@gavvet/more-potential-pain-for-dao-investors
https://steemit.com/crypto-news/@gavvet/bloomberg-view-on-dao
Then there is danthemans now classic post filled with real world DAC challenge experience:
https://steemit.com/crypto-news/@dan/is-the-dao-going-to-be-doa