Mac Mini turns on when I turn on the light in my room

It's actually cool. I come back from work or uni, turn on the light and my mac mini awakes from sleep mode.
Is it normal?
It has never happened before last couple updates.
The mac mini itself is connected to power with an extension cable, together with three other devices (2.1 audio system, an external hdd and another extension cable for printer and display).

tristamson wrote:
I guess it has something to do with electric current.
surely you have a UPS installed, right ?
I guess it started after I updated to 10.6.4 (but not so sure...).
hmm, unless you have a mid 2010 mini, try this:
(a) download the [_*Mac OS X v10.6.4 Update (Combo)*_|http://support.apple.com/kb/dl1048]
(b) launch *disk utility* (in applications/utilities), +verify disk+ and +repair permissions+
(c) reboot into _*safe mode*_
(d) run the combo
(e) after running the combo, let the Mac reboot normally and +repair permissions+ again.
any improvement ?
JGG

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