I have the older white MacBook (2008), running Leopard. My computer became very slow (it freezes for 10-15 sec, every 2 min !!!) - HD still has more than 30 GB free. In addition, Chrome is no more supported on Leopard, nor Flash. I am convinced that Snow leopard will be my hero, who will solve all of this . Now preparing for SL clean install, but I want to restore my applications as well as my data files back afterwards. My question: is Time Machine a good option for backing up? Will it restore Leopard back once more? Will it restore any bugs or faulty software? will my computer freeze again? I know TM can restore only Data. What about restoring applications without OS?