Could you link to the fix/bug report? My mozilla-ppa(deb) Thunderbird 10.0.2 leaks like the Titanic after the iceberg.

Gmail does much much better - a counter-intuitive result.

DNS pre-fetching was disabled in v3.0.2 - https://bugzilla.mozilla.org/show_bug.cgi?id=544745#c21

I am surprised that you're seeing leaks in Thunderbird 10.0.2. That is my own client of choice so I'm always keeping an eye on it after updates and I am not currently seeing any leaks... If you have remote images disabled, are you still seeing leaks? If so, which ones?

It was just a dns pre-fetch. (I never expected Thunderbird to do that.)

I disabled preFetch in the config editor and my ship's running dry again.

For me, Thunderbird had a dns-prefetch leak, but it's fixable via config.

Seems, the author has already documented this.

For those interested: https://grepular.com/DNS_Prefetch_Exposure_on_Thunderbird_an...