Recently, due to increasing slowdown in performance, I reformatted and reinstalled the OS, drivers, and apps/peripherals (incl. all desirable updates), in that order. Nevertheless, my performance appears to have degraded, rather than improved. I've minimized the number of startup apps. I've monitored running processes using Task Manager, Sysinternals' Process Explorer, and now WinTasks Pro 5.04. According to what WinTasks tells me (and from what I can otherwise discern), there are few if any disableable processes/services running.
Primary complaint is consistent delays of 5-20 secs in application starts (e.g., IE, Acrobat, anything really) and/or focus switches, slow/delayed responses to user input (e.g., mouse-clicks), and periodic but temporary freezes (mouse movement, keyboard input). These don't seem associated with any detectable/reported processor usage spikes, etc.
McAfee and Windows are current, and automatic updates are on. Virus/spyware scans come back clean.
Anyone have any suggestions?