Spinning beach ball.
I have an issue that I'm hoping I can get some help with. In a nutshell I have an iMac (3.06 GHz Intel Core 2 Duo) and I'm getting the spinning ball with alarming regularity. I've had the harddrive bumped up from 1 - 2TB and I have 4GB of ram going. I seem to get it when switching between programs, opening tabs in Chrome or Safari, when i type in addresses to those browsers, when it starts up... most of the time in fact. A lot of applications stall when closing (Photoshop CS6 takes about 10-15 seconds to close) and, often, when I switch between progs I have that odd issue when the top-bar shows the app is active but the app (mail, safari etc) is still hidden behind the one I'm switching from.
I don't really want to rebuild but I think I may have to. Is there any other way around this?
I have 940gb of my 2 TB free so I'm nowhere near capacity in terms of usage.
iMac, Mac OS X (10.7)