DNF at 30%. At first it has a 70's SF feel and I was kind of enjoying it in a retro way, but the seams began to show. Inconsistencies, cardboard characters, incorrect science (most species of ants are not blind, for one). But mostly, I kept thinking about the other book I'd rather have been reading. The one with the intelligent spiders on the planet, and the humans in space in desperate straits. The one where I cared about all the characters, and the writing was good. The one with this paragraph in it:

It is an edged cliché that the world is most pleasant in the years of a Waning Sun. It is true that the weather is not so driven, that everywhere there is a sense of slowing down, and most places experience a few years where the summers do not burn and the winters are not yet overly fierce. It is the classic time of romance. It’s a time that seductively beckons higher creatures to relax,
postpone. It’s the last chance to prepare for the end of the world.

Yeah, skip this one and read Vinge's A Deepness In the Sky. If you've read it before, reread it, and you'll still find a lot more than you'll likely find here.