I was doing some research to answer some questions RMS had about bug tracking, and I see some odd things: we have two bugs (24998 and 25438) with Severity="blocker" and Priority="P5". This seems incoherent, as do other uses of Severity="blocker". I had thought that this designation was reserved for bugs that prevent a release (meaning that the RM, or in rare cases the SC, would mark a bug that way).
But I found a log entry from Wolfgang saying * Replace use of outdated severity "blocker" with "critical". So, are we using "P1" instead to mark release-blocking bugs? Should we fix the severities of existing bugs?