Okay, the ISP has apparently tracked down the issue (again) and confirmed that it’s their router that’s been causing the problem – on mild congestion, packets drop, latency increases, everything goes to hell.
So, as compensation they’re putting us onto their Server Connect 750KB/sec upload package until November.
Until then, I’m putting the user cap up to 30. Let’s see what this baby can do. If in November we have enough subscriptions/ad revenue to pay for it, or if they come out with a cheaper package (they’re rolling out a 3MBit upload package which might be more than enough for us), we’ll consider upgrading to something a little more hefty.
In the meantime, have fun. 😀