Sorry to hear this, mate.
Whatever is causing these cascading crashes within the your database, there is
one thing we can be certain of: both
you know (because you've been running K 1.7 without tjese problems, albeit in a differently hosted environment, for as long as K 1.7 has been available) and
we know (for the same reasons and also because we've not received reports similar to yours) that this is not a support issue as far as K 1.7 is concerned.
As you already know, K 1.7 is at end-of-life and and support for this series will cease on 31 August. Regardless of whether you use K 1.7 or adopt K 2.0m there is evidently something occurring in your environment that is unfriendly to your database.
It's possible that the database contained some internal inconsistencies or problems with data integrity
before you migrated from your former environment to your current dedicated server. Unfortunately, we're now in the situation of "trying to determine which way the train went by only looking at the tracks".
I don't know the specific cause of your problem. It could be the version of webserver software loaded on your dedicated server or something to do with the version of PHP or MySql. The problem could have been dormant, lying in wait, before you moved from site A to site B. The fault may have been caused by some legacy application (you were running
Legacy mode
, as I recall) or software that was designed for an earlier version of
Kunena (and there were database changes that took place between K 1.6 and K 1.7) but which is totally incompatible with the version you are now using; you were running some K 1.6 "release candidate" versions of things which I suggested you remove.
I recall that I warned you of
matters requiring your immediate attention
. I do not know if you have attended to those matters. :dry: