Today both Chrome and Opera browsers updated to 3.5.23 but Firefox prevents installation since the new iteration is not yet 'authorized'. I complained to them through feedback: this is the opposite of a security feature by delaying improvements to an add on provided by a trusted source.. Perhaps more complaints would soften their resolve to persist with their sludgy process for reviewing add on updates.
3.5.23 for Firefox authorized
Today the update was allowed by Mozilla.