I am wanting to get some ideas on how best to speed up performance of Mac computers. What causes the beach ball to just keep spinning when placed over the Notification icons in the top right corner of the screen (TM, WIFi, Time etc.) I realize that hardware will play a big roll, but wondered on the software side if there were some tweaks to increase performance. What about using Onyx or CleanMyMac programs. If one or both is good to use is there particular settings that need to be changed prior to running these. How about repair disk permissions? Limiting start up programs. Looking at Activity Monitor. Appreciate any suggestions.