The Nexus One isn't the only phone getting an OTA today, the Android 2.3.2 update has started rolling out to the Nexus S as well. It's small ( only about 600 kb or so) and while we're not 100 percent sure, it looks like these updates are to address the SMS bug.
We haven't been blessed by Google with the update on our Nexi just yet, so we're on the lookout for the download link. If you feel like helping in the search, grab Alogcat from the market (link after the break), install it and run the app after you get the update message, but before you run the update. Save the output, and contact us. [Android Central forums] Thanks Droid800!
Update: Here's that link we were looking for. You know the drill, rename it to update.zip, drop it in your internal storage, and apply from recovery. If you hit any snags, holler out in the Nexus S forums. Thanks for the link Anon!