FqBl (July 1st 2008) has the blur size labeled as “Red Blur Size” in the UI. It still shows as FrequencyBlur1.BlurSizeX to Fusion, but it seems to just be named funny in the panel.
Oh, and the boundary condition stuff works much better. Thank you.
The that slipped in on the last build. It’s fixed in the latest build, which should show up on the main website soon. But I’ll update the build here since it might take a while.