Oracle 10g and Oracle 11g don't seem to have the same behavior concerning the create table privilege.

Oracle 10g don't let the user create tables if they don't specifically have quota on the tablespace where they are trying to create the table.

Oracle 11g, so far I've tested two different instace, one created manually and the other using DBCA, and the create table privilege let create tables anywhere the user want to, except SYSYEM.