certainly do not have the issue on any of the Mac's I've owned or the ones I do 
own now.

I use the F1 / F2 keys though to change the brightness.





Regards,

Neil Barnfather

Talks List Administrator
Twitter @neilbarnfather

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On 17 Jun 2013, at 08:01, Nicholas Parsons <[email protected]> 
wrote:

> After contemplating the sad news that screen curtain does not conserve 
> battery power, I decided today to try and lower my mid 2011 MacBook Air's 
> screen brightness in order to conserve battery power. I did this in the 
> display pane of system preferences. When I tried adjusting the screen 
> brightness slider, however, VoiceOver went a little bananas. The sound kept 
> cutting in and out almost like VoiceOver was stuttering or on a really bad 
> phone line. Then I lost VoiceOver sound completely. I navigated right and 
> turned automatically adjust screen brightness back on, and VoiceOver returned 
> to me. However, when I would navigate back to the brightness slider VoiceOver 
> would begin stutterring again.
> 
> Any ideas of what's going on here? Does this happen to everyone or just me?
> 
> Cheers,
> Nic
> 
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