We (and other instances) do tend to have issues with lemmy.world from time to time - I think it's a combination of their sheer size, and some geographical quirks that can slow things down.

Right now, it looks like federation from them to us is fine, but content from us to them is taking about 19 hours to go through.

I can look into this, but there's a high chance that we'll have to just wait for it to settle down.

Good news - after getting real bad today (okay, that part's not good news), it looks like we've fixed federation with lemmy.world and a number of other instances. Things should be within normal parameters.

More specifically, federation from us to lemmy.world has a delay of about 57 seconds, while federation from lemmy.world to us is about 1.7 hours (this is admittedly not ideal, but also not that unusual).

We suspect this may have to do with their older Lemmy version as we're noticing it on some other instances as well, but not .ml which is running the latest.