When you were installing LM had to choose separate /home without formatting, because if you selected only/(root), the system installed / and/home on the same partition.
Reinstall and do as above.
LM17.1 Mate (PC and Notebook) with AMD Catalyst
HP Pavilion g4-1316br, AMD Quad Core, 1,5 GHz, Radeon 6520G/7450M,
Linuxcounter Registered User #506065 (2008)