Why is the trackpad on my iBook G4 sluggish

The clicker on the trackpad of my iBook G4 has gotten very sluggish and most often doesnt click.  Ive been using an external mouse.  How can I make the clicker work properly.  I was wondering if somehow I could clean it.  Please help.  Thanks very much

Have you tried resetting the PMU?  The PMU (Power Management Unit) controls trackpad function, so resetting it often helps when the trackpad isn't working (or isn't working right).

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