Seen while running Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:2.0b10pre) Gecko/20110112 Firefox/4.0b10pre STR: 1. Go to youtube.com 2. Load a HD video such as http://www.youtube.com/watch?v=-zvCUmeoHpw 3. Pop the video out. 4. Press the play button in the popped out video. Then ESC. 5. Return to the original video and click on it. Reports: http://crash-stats.mozilla.com/report/index/bp-8dc619bd-7c1b-4281-8569-afe3c2110112 http://crash-stats.mozilla.com/report/index/fead41af-2684-4e55-97d8-c07cc2110112 Flash version: File: Flash Player.plugin Version: 10.2.152.14 Shockwave Flash 10.2 r152

Signature FlashPlayer-10.6@0x46e11a UUID 8dc619bd-7c1b-4281-8569-afe3c2110112 Process Type plugin Version: Filename: Flash Player.plugin Time 2011-01-12 11:26:17.856202 Uptime 22 Install Age 5881 seconds (1.6 hours) since version was first installed. Product Firefox Version 4.0b10pre Build ID 20110112033217 Branch 2.0 OS Mac OS X OS Version 10.6.6 10J567 CPU x86 CPU Info family 6 model 23 stepping 6 Crash Reason EXC_BAD_ACCESS / KERN_INVALID_ADDRESS Crash Address 0xffffffffe5fe19e5 User Comments App Notes Renderers: 0x21a00,0x20400 Processor Notes EMCheckCompatibility False Bugzilla - Report this Crash Related Bugs Crashing Thread Frame Module Signature [Expand] Source 0 @0xe5fe19e5 1 FlashPlayer-10.6 FlashPlayer-10.6@0x46e11a 2 FlashPlayer-10.6 FlashPlayer-10.6@0x28eec8 3 FlashPlayer-10.6 FlashPlayer-10.6@0x46fa5e 4 FlashPlayer-10.6 FlashPlayer-10.6@0x457bdf 5 FlashPlayer-10.6 FlashPlayer-10.6@0x45d2f4 6 FlashPlayer-10.6 FlashPlayer-10.6@0x653376 7 FlashPlayer-10.6 FlashPlayer-10.6@0x64c1c1 8 FlashPlayer-10.6 FlashPlayer-10.6@0x64fea0 9 FlashPlayer-10.6 FlashPlayer-10.6@0x651786 10 FlashPlayer-10.6 FlashPlayer-10.6@0x37a2e6 11 FlashPlayer-10.6 FlashPlayer-10.6@0x4da230 12 FlashPlayer-10.6 FlashPlayer-10.6@0x4e4884 13 FlashPlayer-10.6 FlashPlayer-10.6@0x4e23cc 14 FlashPlayer-10.6 FlashPlayer-10.6@0x4501aa 15 XUL mozilla::plugins::PluginInstanceChild::AnswerNPP_Destroy dom/plugins/PluginModuleChild.h:356 16 XUL mozilla::plugins::PPluginInstanceChild::OnCallReceived PPluginInstanceChild.cpp:1681

[@ @0x0 | FlashPlayer-10.6@0x46e11a ] is another stack I get when I follow the STR in Comment 0. Still fairly easy to repro with the latest trunk nightly.

With the combined Flash signatures only, it is #26 top crasher on Mac OS X in 4.0b10 over the last week.

Resolving this as WFM as there are no current crashes with these stacks. Will reopen if something reappears.

Version and milestone values are being reset to defaults as part of product refactoring.