Firefox 3.6.20 is a regular security and stability update to Firefox 3.6.x.
- Overall lead: Christian Legnitto
- Security/Dev lead: Dan Veditz
- Build lead: ??
- QA lead: Al Billings
- Code freeze for non-blockers: 2011-07-25
- Code freeze for blockers: 2011-08-01
- Build #1 created: 2011-08-02
- Build #1 available: 2011-08-02
- QA testing starts: 2011-08-03
- Build #1 released to the beta channel: 2011-08-09
- Final release: 2011-08-16