Ticket Priority Guidelines
This page describes the criteria you should use for deciding what serverity to apply to your issues filed in Trac.
Blocker: Should only be used if the issue WILL cause data loss or instability reliably
Critical: The issue described can cause data loss or instability in some cases
Major: Important but not tragic issues, like updates to the API that will add a lot of much-needed functionality or significant bugs that need to be fixed but that don't cause data loss
Minor: Useful enhancements and annoying but not damaging bugs
Trivial: Completely new features, cosmetic bugs, and everything else
