Freezing and lag when using Safari
I've had this issue for a while. It happens when I'm using Safari and have more than one window open, I may have some other apps open as well. The expose animation will start to happen but it will freeze half way for 3-5 seconds before running as normal. Sometimes it freezes for 5-8 seconds.
I tried a clean install of my iMac and it stopped doing it but after a week or so it started again.
I am running a 21inch Aluminium iMac 2.4ghz Core 2 Duo with 4GB 667 DDR2 RAM. It is the first aluminium model of iMac.
Is there an issue with my iMac or is it just a case of my Mac being old and am I in need of an upgrade. I am planning on buying a new iMac once the line refreshes later this year.
iMac Core 2 Duo, Mac OS X (10.6.6)