Interesting! May I ask what area you lived in (not due to the power distributor, but the age of the infrastructure in the area). The areas I've had issues are Brunswick, Thornbury and Footscray. Folks at work (we're a bit spread out but mostly Melbourne based) often talk of minor outages etc...

I actually had some electronics fail quite recently after a number of minor outages and speaking with insurance they were saying it's very common in certain areas where the infrastructure is aging or has recently been struck by lightening.

I have noticed the operating voltage in the inner north seems to vary between as low as 217V to 246V, but it's quite frequent you notice the lights dimming in houses round here. I don't think there were any last summer (if you could call it a summer) but usually I'd experience 2-5 (ish) complete outages on hot days, when I spoke to someone in know they said this is normal as they load shed you can experience short outages.