I have 3 of the female connectors and mine are all okay so far but then I've not disconnected/reconnected them a lot since I got them, only about 5-6 times total. I'll keep an eye on this for sure. Thankfully all my connectors are outside of my case so if there was a leak it wouldn't be a disaster but I can imagine how this would be terrible for people who are using these on their CPU, GPU and such. Of which I've seen a few users on this forum making use of them in that fashion for quicker part upgrades.

I hope Koolance sorts this as the connectors are a brilliant idea and look great.