I think this is starting to point to being the cause of a bunch of things.

the crazy vibrating, the thing where the phone doesn't answer calls right away, I also sometimes see a call notification on the screen for what seems like an eternity before the ringer goes off.

seems it chokes when it has multiple notifications.

I think the version of good I had (which was unsupported on the saga) compounded it becasue it was getting push email. but seems incoming texts trigger some of this. ANd also I'm not sure that there isn't an issue where notifications aren't closing the data connection cleanly and quickly.

Hopefully it's tweaked in the firware update due first half of this year (I'm hoping sooner).