Using Trinity trunk, finally (switched from KDE 3.5.10, yay!), there is one definite oddity. I use a program (xplanet) as my desktop background, and fvwm 2.6.5 with a 3x6 set of viewports.

KDE 3.5.10 respected the program's refresh rate and reran it only when the requested interval passed, but Trinity is rerunning it whenever the viewport changes at all, Since I have viewport moves bound to keys and that can happen a dozen times a second, this is less than ideal. I thought maybe something in Trinity was looking at the _NET_DESKTOP_VIEWPORT, but that doesn't seem to be the case.

Does anyone know why this might be happening? (I'm investigating further, of course.)