Why the Sunday? Is everybody racing on the Sunday? Can the race engine not cope with the viewers? Maybe you need to take the improvements for free subscribers back off again and see if you can get the races running normally again as this is happening each and every Sunday since the upgrades?
We're working on it, and we will be collecting a lot of data and using it to investigate the problem. We were all sitting here waiting just in case it happened again this week.
In the meantime we will try to get your races running ASAP.
1. Observe how much races at one given time is usually stable and don't crash
2. Reset all leagues, so owners need to choose days and times for their league
3. Build some kind of counter/limiter. League owner should choose day and time, and system would show error msg, that given time has no free slots on the server.
= no more crashes.