If you're concerned about the care and feeding of your Mac, you may want to check out this handy application. CheckUp 2.5, which is a multipurpose maintenance utility designed to monitor CPU usage, disk drive activity, and network adaptors. Users of this application can view detailed information about all running processes, and also tweak the application to remind them when certain conditions are met as regards to a specific resource. This version is compatible with computers running Mac OS X 10.5 and this is a trial version that can be used at no charge for thirty days.