On 10/9/07, Brion Vibber brion@wikimedia.org wrote:
We're not entirely sure how consistent it is or what exactly triggers it, but please don't turn it back on in the way it's currently coded without checking with us first.
Brion should have also mentioned that this doesn't mean the PNG hack is itself broken (although it might be for other reasons ::shrugs::). The root cause is almost certainly something broken in Squid. The request to keep it disabled is precautionary until the underlying cause is understood and believed to be fixed.