I have the following cluster set up:

upstream cluster {
server 1.1.1.1:81 weight=1;
server 1.1.1.2:81 weight=8;
server 1.1.1.3:81 weight=2;
}

(The IPs are changed for privacy's sake)

Now, all servers are getting some load, so the load balancing is definitely working to some extent..
However, the .2 server is getting far far less than the others, in fact only about 15% of all traffic, even though the weight is set to 8, which is far higher than the other servers..

I am using nginx/0.7.62

Any ideas?