For the past few days, I am getting an occasional error:

I don't get it visiting any other site and it doesn't seem to matter what I'm doing on Subeta to get it. Usually if I just refresh the page, it's fine.

Same here. It's completely random but everything's fine again after a couple of refreshes.

Wow! I am getting this all over the place this morning, almost every other page. And the font is crazy too. It goes from normal to enormous!

I think for you at least, it might be related to this.

White pages / 500 errors at 10:35 AM

I just got error pages like crazy too, seems to happen most mornings around the same time (although I think it was a little bit later today, but still). It's being looked into.