Voted, and added details of my system & experience.
Negative on the rooted, running a stock NS4G on Gingerbread, all system updates and carrier updates are applied. I notice that most of the complaints are coming from Sprint users, but at least one complaint appears to be from an AT&T user, so probably nothing carrier-dependant. I tried updating my Gmail app to the latest version, which did not work, and then uninstalled all updates and returned to the stock Gmail app version that the phone originally shipped with.
Is anyone else noticing above-average battery drain after this issue began? I definitely am, but I can't say conclusively that it is tied to this problem.
<bang head against wall> This is killing me...