No nothing was changed.

I'm currently fixing a problem with a slow performing database query related to processing the shares for the XMR pool that didn't find a block for ages and that has now accumulated 25 Million share records. As soon as this is done everything else will also resume processing.

End of time means, forever.

All payments are visible on both the pool's "Payments" table and the blockchain. Did you check both?

The recent growth of all pools caused the shares table to grow by the same amount, causing the query to count a miner's numbers of shares to become so slow that the web request fetching the miner's stats timed out. Fixed by adding a database index.

Fixed. Thanks for reporting.

@Jason: Could you tell me using which address that happens?

We have currently no balance expiration so it would stay there until the end of time.

@Ayaz: There are multiple factors that could have contributed to his earnings being higher comparing just the number of miners. Intermittent connectivity issues, rejected shares etc. To answer that I would have to go over all of his shares and compare the timings with yours. It's not that simple but I'll try to find out more about this. Just give me some time.

I've run both your config and that of your friend through a calculator and both if you appear to exceed your projected earnings by a significant margin. Why your friend earned more than projected would require an extensive investigation and I'm a bit swamped in work right now.