Well, I'm with the thread creator here, even if I don't like the language.
The Warning makes no sense other than being annoying. It is so simple implemented that I would be ashamed as a programmer, it doesn't even check anything, if you open 10 pics with 10x10 pixels you get it too.
And you can run out of RAM with 1 picture too, if you turn off undo-limitations and do enough stuff with a giant picture. And if you would run out of RAM, what will happen then, that is so disastrous that you need a warning right from the beginning, so that you don't even think of getting close to that point? Total System Failure?

Windows isn't like that anymore since about the first beta of PSP1.
I have an ingenious proposal

: Let's warn the User when the RAM is, or is getting close to being full? And not every time he opens any 10 pics. How does that sound? But that Warning and the one from the thread, must be turned on or off via the settings, like in any other free or cheaper Software.