Does my mac need virus protection?
I have had my iMac for over two years and have never done any maintenance or run any virus protection. Lately it has been running slowly while online. I am getting the swirling circle often, especially while playing games through facebook. Also safari will unexpectedly quit. Do I need to have virus protection? Do I need to run a maintenance program or clean up? I have plenty of disc space left. I do all of the software updates. I don't seem to be having any problems while working offline. We have Verizon Fios and recently updated our speed, but it seems to be even slower.
This is what I have: Processor 2.66 GHz Intel Core 2 Duo. Memory 4 GB 1067 MHz DDR3 running Mac OS X 10.5.8
iMac, Mac OS X (10.5.8)