No tweaking on my machine to my knowledge

There's no deliberate tweaking at all beyond flipping the registry key mentioned to disable the buggy graphics driver function. I don't have any tweaking software installed, but that doesn't mean that one of my extensive list of installed applications is not to blame. That said, I can't think of any reason why my machine is non-standard in any regard. I didn't have any problems before the 3.50 RC1 version, either, though I have changed a few pieces of software since switching versions.

If you want a (partial) dump of my registry to check for any changed settings, do let me know what you want and where to send it.

I've just changed a hardware button back to my screen capture application, and I'll make sure to capture anything that looks odd.

TextMaker looks consistently wrong - that could well be the way TextMaker is programmed. The other issues mentioned are rare occurrences.

I will keep testing, I promise, and I'll screen capture anything that looks unusual.

David