Rails app reports crazy 'DB' times, or is maybe hung up in the mysql layer?

Question

At some point in the past week, my production logs began showing bizarre numbers that don't ad up, like:

Completed in 52ms (View: 26, DB: 1129)

This query did take over one second. But, there was no database activity - no sql queries shown in mysql log nor rails log.

So, somehow the Rails app is spending a tremendous amount of time doing what it thinks is database work, although it's not.

I'm using the file cache store, passenger and REE. Thanks for any ideas!