[Rails] rails 3 time breakdowns don't add up

Ever since upgrading an app to rails 3.0.5 the time breakdowns at the
bottom of each action don't come close to adding up. Further, the app
feels significantly slower.

Completed 200 OK in 1684ms (Views: 165.1ms | ActiveRecord: 6.6ms |
Sphinx: 0.0ms)

165 + 6 + 0 isn't anywhere close to 1684.

All of my actions have this kind of discrepancy?? Where's this lost
time going?

None of the SQL statements or individual renders have big numbers...
Something is missing. Thoughts?

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