Thanks for that tip -- I've got a box of this in 4x5 and I'd hate to test it and find out the whole box is edge fogged (and the sheets I loaded worse than that).
I had 75 sheets of it, sealed. The first ones I used I tray developed under the safelight, thinking that was ok to do. While you do get an image, you also get a lot of fog - which I attributed to age. So I kept increasing the exposure. That didn't work.
It wasn't until I got a 4x5 reel for my Jobo that I developed it in the dark and realized I'd been fogging the film myself.
A good start time for Parodinal, by the way, is 11-12 minutes at 1:25 dilution. I think I could've shot it at iso50 and extended that development a bit and everything would've been fine.