Stan, lets isolate 2.5.10 and 3.0 // 2 major bugs of 2.5.9

[Stan Busk]

2.5.10?

> --------
> For info:
>
> We have reproduce, isolate and fix 2 major bugs in 2.5.9
>
> * one was old enough I think, related to
>     indexes + open/close + order by
>
> * second was introduced in 2.5.9 as result of optimization
>     of work with cache.