I know this sounds like a flippant answer and it isnt meant to be, just the truth. It will be stable as soon as we can correct the issue.
It's a very hard problem to figure out. The site ran over 25,000,000 hands during 1 year of testing without any major issues, now we take it live and for some reason it is losing the connection to the database in an inexplicable way. No errors, no blocked threads (sorry technical jargon) nothing!
We think it may be down to some issues with some underlying software technologies supplied by the software giant Oracle! When you get to that level of complexity it is neither an obvious or an easy problem to correct.
Fortunately we have some of the best people in the business working on this issue an we hope to have it corrected "soon". I know "soon" means very little, but if you base it on the amount effort being put into this problem then it that statement makes sense - we'll get it fixed as soon as humanly possible.
Sorry again for all of the issues and we hope you can see how great it will be when it stabilises. So we hope you accept our sicerest apologies and stick with us in the near term, it will be worth it!
All The Best