what these lines mean ?
root@linux [~]# ide0(3,3): write failed, user block limit reached.
ide0(3,3): write failed, user block limit reached.
ide0(3,3): write failed, user block limit reached.
ide0(3,3): write failed, user block limit reached.
ide0(3,3): write failed, user block limit reached.
ide0(3,3): write failed, user block limit reached.
ide0(3,3): write failed, user block limit reached.
ide0(3,3): write failed, user block limit reached.
ide0(3,3): write failed, user block limit reached.
ide0(3,3): write failed, user block limit reached.

you have something with quota that have excided the allowed disk space