There's no substance behind those claims. tablet-browser-daemon has been around since Diablo (you can see the slightly old source in the MicroB Garage project) which doesn't use Tracker. Tracker's developers - let's not forget that we're talking about a GNOME component for the computer - wouldn't add a dependency on an unrelated Nokia component you can't get the latest source for, and I'm pretty sure there's no browserd mention in Nokia's diff to Tracker.

(Sorry for the rant[?])

To try and answer your question: I removed tablet-browser-daemon from my rc2.d folder on my N800 and everything (with the exception of MicroB ) works fine. Since the N900 uses Upstart, maybe you could look in /etc/event.d