Comment 14 for bug 939657

Tracking for Firefox 11 and 12 since this is a regression in 11. Based upon the perf symptoms detailed here and the lack of dupes, we likely will not want to uplift this fix to Beta prior to release based upon the risk/reward. Please send email to <email address hidden> if you disagree. We'd be willing to take this fix for Aurora 12 in the near future, however. Please nominate when ready.