Last modified: 2014-04-21 18:42:21 UTC
Safari 5.0, 5.1, 6 etc. are not listed anywhere. http://stats.wikimedia.org/wikimedia/squids/SquidReportClients.htm
Prioritization and scheduling of this bug is tracked on Mingle card https://mingle.corp.wikimedia.org/projects/analytics//1139
Still an issue, but I don't see how this is "critical"