The nsStringKey uses a vanilla nsAutoString, which will spill to the heap for just about every ProgID known to man.
FWIW, in the latest traces, ProgIDToCLSID was taking about ~1% of the time, and was dominated (>70%) by nsAutoString and locking in the hashtable. (See also Bug 13009.)
Status: NEW → RESOLVED
Last Resolved: 19 years ago
Resolution: --- → DUPLICATE
*** This bug has been marked as a duplicate of 12296 ***
cleaning up: VERIFY duplicate
Status: RESOLVED → VERIFIED
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