Disk Cleanup, system error memory dump files

Ever run a disk cleanup on, say, a Windows Vista system, for example? I got an older Toshiba Satellite laptop (5 years old). It's on the slower side as applications and Internet in general require more and more resources over time. I started scanning, using Windows disk cleanup, and saw it stuck at 'Scanning:system error memory dump files' -->> 15 minutes upon Disk Cleanup. That's WAY TOO LONG. What to do? I went into "Problem Reports and Solutions", then Advanced Settings on the bottom. At 'For all users, turn Windows problem or error reporting" = OFF.

Of course, these reports supposedly help in diagnosing issues, but they seem to clog the system up, at least on Vista OS. I have never once benefited from a WER report. At worse, WER can be turned on later. At best, you can speed up the Disk Clean Up process and maybe cleanup a little room (disk space) as well.