[sgt101]

We can see very large populations of sun like stars, and there are no observations of this kind of behaviour, so it seems unlikely. The large full sky survey telescopes coming on-line in the next few years will rule this out our in after a decade or so though. If billion sun like stars are watched for five years at least fifty should pop in a micro nova if the theory has any legs.

[perl4ever]

I have no pre-existing knowledge of the subject, but a quick search turned up something about the Sun being much less active than similar stars:

https://phys.org/news/2020-04-sun-similar-stars.html

If this is accurate, then it raises the question of whether the Sun is inherently and always less active or whether it just happens to be quiet while human civilization has arisen.

[KKPMW]

As far as I am aware there are observations of this behaviour. Several are listed here: https://en.wikipedia.org/wiki/Nova#Recurrent_novae

[cowboysauce]

Are any of those from sun-like stars? The ones listed all seem to involve white dwarfs.