Verified fixed for 1.9.0.5 with Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en-US; rv:1.9.0.6pre) Gecko/2008120204 GranParadiso/3.0.6pre. The content no longer streams once the tab is closed. I verified the bug in 3.0.4 Firefox.
Verified fixed in trunk with Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en-US; rv:1.9.1b2pre) Gecko/20081124 Minefield/3.1b2pre.
Verified fixed for 1.9.0.5 with Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en-US; rv:1.9.0.6pre) Gecko/2008120204 GranParadiso/ 3.0.6pre. The content no longer streams once the tab is closed. I verified the bug in 3.0.4 Firefox.
Verified fixed in trunk with Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en-US; rv:1.9.1b2pre) Gecko/20081124 Minefield/3.1b2pre.