Waking displays with mouse no longer works

petsounds said:

Since updating to 10.8 from 10.6, I can no longer wake the displays using my mouse; I have to press a keyboard button. This is obviously not a huge deal, but it can cause unintended consequences because the keystroke message gets sent to the active application.
Is anyone else having this problem?

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davidlv said:

I had it for a while, don't know what changed, but a mouse click now works.
If you are concerned about keystrokes causing havoc, hit one of the shift keys (probably the safest).

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