I wrote: > Uh, was this really necessary? Qt 4.6.2 is normally backwards-compatible > with 4.5.x. PS: Running application X built against Qt 4.5.x with Qt 4.6.x SHOULD work. Running application X built against Qt 4.6.x with Qt 4.5.x WILL NOT work (and this is why pushing apps built against a new Qt to stable BEFORE that Qt gets pushed to stable is a bad idea, but rebuilding appliations for the new Qt is normally NOT needed). This is known as one-way (backwards only) compatibility, and quite common. That said, some applications do need to be rebuilt due to backwards compatibility issues, or get more features when rebuilt against a newer Qt. But as you did not include a Bugzilla reference nor any other form of rationale, I can't figure out why you rebuilt this particular application. Kevin Kofler -- devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/devel