We have this query now SELECT Id, Contact.AccountId, Contact.Account.Name FROM User WHERE Id = : UserInfo.getUserId() 
that it suppose to bring back the id and the account name of the Community User which is the Contact of an account in salesforce. but its returning Null back and the page crashes when I use it It seems to me that UserInfor.getUserId() is not returning a value and that is why I am getting that error . So i am trying to query the current partner community user ...Force.com and access the parent account, which it will always be the same account