Hello, and HELP!!! I have an iMac (Alum/2007) with 4GB RAM running Snow Leopard 10.6.8, software updates all up to date. 2TB Western Digital Drive w/500GB Boot Drive and plenty of free space (300+GB); SMART Status = VERIFIED. The drive is 2 years old. Ran Disk Utility from SL install disk and repaired permissions. Did the FSCK -fy thing; no issues. Ran Disk Utility, repaired permissions twice. Ran Tech Tools - everything passed. Reset PRAM. Reset SMC. Unplugged all peripherals before doing all this - no change. Up until about a week or so ago I had NO performance issues. None. Then I started having a beach party with beach-balls happening all the time. This was especially the case when either Mail or Safari were running. This *seemed* to happen after either a software update with a security patch and/or possibly after a Flash update. With Flash disabled, there is no difference. Generally an app will suddenly beach ball and freeze the system. It may take a few seconds or several minutes for control to resume. With Activity Monitor running and visible I see nothing to suggest anything in particular is causing the problem. 1. What should I try to resolve the performance? 2. Any ideas what it may be that caused this? Thanks!