I have a MacBook Pro about 2 years old now, upgraded last year to Mac\nOSX 10.5.4\n\nIn the last few weeks but probably worseining for more like twoi\nmonths, everything is slowing down even when there are few\napplications open. Nothing significant has been added in terms of new\noftware and, like I say, it's more of a steady slowing than any sudden\nnoticeable change.\n\nNow, much of the time, the dreaded raindbow pinwheel is spinning away\nwhen I load intrenet pages, open or swicth switch applications, and\neven when i just scroll down too quickly in a document.\n\nWhen - rue the day! - I was a PC guy, I used to defragment and do\nmisc. clean-ups when things slowed. Is there a kind of standard\norganizing and cleaning up routine, approach or utility that should be\nregularly used to keep things moving like new?