Quads - Expected Abberation?

[RocketManJames]

So, I've been playing on an online site (fairly popular one)... I haven't played on this particular in a long time. The last time I played on it, I noticed a TON of quads. I didn't think much of it, and I chalked it up to variance.

Well this weekend, I started playing on it again. I've played about 700 hands... and here's what I've seen.

Total of 11 SHOWN quads. And, 2 'quite possible' quads where there was no showdown. Basically, flop of 555 and TTT, and a bit of action.

Of the 11 shown quads, 2 of them were pocket pairs. One flopped quads, and the other was a set that improved to quads.

The reason I started counting was that I saw three quads in a stretch of about 30 hands.

Anyway, this feels totally wrong. And, I'm not one to accuse any site of having a screwy RNG. What do you think? Is it more likely that I am seeing some aberration that is expected or more likely that the RNG is not quite right?

-RMJ