Since, most of the time, when the registry is accessed, it's accessed
by a very specific address, it isn't like the registry has to be
searched in order to find them. In that case (which is the majority of
the time), the size of the registry is of little concern.
It can become a concern, however, as your registry approaches the
maximum setting. To check the current size and alot more space, if
needed, follow the guidelines from this page on SmartComputing:
"If you are
using WinXP, open the System Properties dialog box in the Control
Panel (click Start, Settings, and Control Panel, then double-click
the System icon). Click the Advanced tab, then click the Settings
button under Performance. In the Performance Options area, click
the Advanced tab then click the Change button in the Virtual Memory
section. The Maximum Registry Size (MB) field is at the very bottom
of the dialog box."
In summary, good housekeeping is generally a good thing, but if
you find you're getting obsessive about it, know that you can
afford to relax and ignore the clutter at times.
Since Iolo's System Mechanic is automated, it shouldn't take much
effort on your part to do the job, but if you'd like to run it
once a month instead of every week, it won't hurt your system one