You cannot lock SP into SW:P. That refreshes on mind flay. Only crit and self-buff %damage increases (so something like Darkness or Malygos sparks but not Icehowl crash) will not refresh. They were evidently not fixed for SW:P when haste was fixed for corruption. My lock account is out of time as well, so I can't test if crit was fixed for them.

New info? It's been like that ever since our WOTLK talents were released, same goes for crit back when it was a %-increase of dot damage. How you can miss things like that is beyond me.

On topic, I find the crit lock-in very annoying especially on fights with any kind of target swapping where we want SWPain up as fast as possible to boost MB and MF.

Another question, what classes do you see benefitting most from buffs such as Power Infusion and Focus Magic (after mages). On single-target fights and multi-dot fights? A well-timed Power Infusion on a priest when a new wave of adds spawn or when we can Mind Sear I don't see ANY other class beating us in terms of benefits from PI, not even mages.

Well, considering Arc Mages override PI, and Locks arguably not having as strong an AoE as we do, there aren't any. I would also argue that we are now the best target for PI since the Corruption nerf and considering how many Locks are 51 Demo.