I'm working on a Macbook Pro (Intel, 2010) and it's *constantly* showing the spinning wheel. It runs like a complete dog, and despite running Onyx and clearing out temporary files and any unncessary software I really cannot see what's causing this!
I've performed out-of-machine hard-drive diagnostics as I had a sneaky suspicion that the HDD may either be failing, or on its way out.. but both the long and short tests passed and SMART looks healthy. (Not as though that means anything!!)
Please help, I know my way around OS X but I'm just not as aú fait with it as I'd like to be.. is there a 'Resource Manager' style app for Mac I can help troubleshoot with?