So i've noticed that my iMac mid-2007 model (Processor 2.4 GHz Intel Core 2 Duo , Memory 2 GB 667 MHz DDR2 SDRAM and Graphics ATI Radeon HD 2600 Pro 256 MB) has relatively slowed down since i've updated to lion. When I was running leopard it ran much smoother. Simply task like opening iTunes and Safari take time and sometimes don't even open. I have 4 accounts ( don't know if that affects anything) and 149gb of space left . Is there anything I can do other than re-installing leopard to maybe "boost" my computers performance/speed? (Deleting apps doesn't seem to help) Thanks!