New player freezes with Linux+Firefox+Firebug.

Question

Any page (or tab) playing a flash video (youtube for example)
freezes firefox when closed when firebug is loaded as a module.
This only applies to flash video's being played and intermittently
fails to crash.
This message is cross posted to the bug report form as per
the blog.
=== configuration ===
Generated: Wed Mar 28 2007 16:20:39 GMT+1000 (EST)
User Agent: Mozilla/5.0 (X11; U; Linux i686; en-US;
rv:1.8.1.3) Gecko/20070310 Iceweasel/2.0.0.3 (Debian-2.0.0.3-1)
Build ID: 2007031001
Enabled Extensions: [21]
- Aardvark 2.0:
http://karmatics.com/aardvark/
- Adblock Plus 0.7.2.4:
http://adblockplus.org/
- boox 0.6.0.1:
http://joliclic.free.fr/mozilla/boox/
- ChatZilla 0.9.77:
http://chatzilla.hacksrus.com/
- del.icio.us 1.2:
http://del.icio.us/
- Firefox Showcase 0.9.2.2:
http://showcase.uworks.net/
- Google Toolbar for Firefox 2.1.20060807L:
http://www.google.com/
- Greasemonkey 0.6.8.20070314.0:
http://greasemonkey.mozdev.org/
- HackBar 1.0:
http://www.izi-services.nl
- Header Spy 1.2:
http://tntlab.com/mozilla/
- It's All Text! 0.6.1:
http://addons.mozilla.org/firefox/4125
- Live HTTP Headers 0.13.1:
http://livehttpheaders.mozdev.org/
- LiveClick 0.2.0:
http://liveclick.mozdev.org
- MozLab 0.1.4.2006100105:
http://dev.hyperstruct.net/mozlab
- MR Tech Local Install 5.3.2.3:
http://www.mrtech.com/extensions/local_install/
- OpenSearchFox 0.0.0.8:
http://forum.moztw.org/viewtopic.php?t=16122
- SeoQuake 1.4.0:
http://www.seoquake.com/
- StumbleUpon 3.04:
http://www.stumbleupon.com/
- Tab Mix Plus 0.3.5.2:
http://tmp.garyr.net
- Unwrap Text 0.4.3:
http://www.volleynerd.com/firefox/extensions
- Web Developer 1.1.3:
http://chrispederick.com/work/webdeveloper/
Disabled Extensions: [4]
- Firebug 1.01:
http://www.getfirebug.com/
- JavaScript Debugger 0.9.87:
http://www.hacksrus.com/~ginda/venkman/
- netcrafttoolbar 1.1.1.7:
http://toolbar.netcraft.com/
- Session Manager 0.5.3.2:
http://sessionmanager.mozdev.org/
Total Extensions: 25
Installed Themes: [1]
- Iceweasel (default):
http://www.mozilla.org/
Installed Plugins: (5)
- gxine starter plugin
- Helix DNA Plugin: RealPlayer G2 Plug-In Compatible
- MozPlugger 1.7.3 handles QuickTime Windows Media Player
Plugin
- Shockwave Flash
- VLC Multimedia Plugin
=== backtrace ===
#0 0xffffe410 in __kernel_vsyscall ()
No symbol table info available.
#1 0xa7d8d398 in pthread_join () from
/lib/tls/i686/cmov/libpthread.so.0
No symbol table info available.
#2 0xa03c0839 in NP_Shutdown () from
/home/me/.mozilla/plugins/libflashplayer.so
No symbol table info available.
#3 0xa061def8 in NP_Shutdown () from
/home/me/.mozilla/plugins/libflashplayer.so
No symbol table info available.
#4 0xa04f8be0 in NP_Shutdown () from
/home/me/.mozilla/plugins/libflashplayer.so
No symbol table info available.
#5 0xa06ece72 in NP_Shutdown () from
/home/me/.mozilla/plugins/libflashplayer.so
No symbol table info available.
#6 0xa039cf0b in NP_Shutdown () from
/home/me/.mozilla/plugins/libflashplayer.so
No symbol table info available.
#7 0xa0321b40 in NP_Shutdown () from
/home/me/.mozilla/plugins/libflashplayer.so
No symbol table info available.
#8 0xa031ce99 in NP_Shutdown () from
/home/me/.mozilla/plugins/libflashplayer.so
No symbol table info available.
#9 0xa0315e51 in Flash_EnforceLocalSecurity () from
/home/me/.mozilla/plugins/libflashplayer.so
No symbol table info available.
#10 0xa031a507 in Flash_EnforceLocalSecurity () from
/home/me/.mozilla/plugins/libflashplayer.so
No symbol table info available.
#11 0x0a0b52fc in ?? ()
No symbol table info available.
#12 0xaf85041c in ?? ()
No symbol table info available.
#13 0x0a3db9c8 in ?? ()
No symbol table info available.
#14 0x00000000 in ?? ()
No symbol table info available.

Answer 1

Yes, the first bug report is with Firebug on, and the
"further information" message is with everything but Flash turned
off. It seemed that with firebug enabled, I was virtually
guaranteed to get a freeze, and turning it off reduced the chance
of that considerably, however, looking back, I don't recall whether
the freeze only happened when closing the last flash enabled tab.
Yet more NEW INFORMATION:
While playing around with having the libraries installed or
not, I noticed that if I erase the flash libraries from the plugins
directory without restarting firefox, it will eventually act as if
the plugin was never installed. This leads me to strongly suspect
that Firefox 2.0.0.3 actually UNLOADS the plugin after it's
finished using it. If Opera doesn't do that (follow the link in
ismail.donmez's post), and the bug were in the shutdown code of the
plugin, this would be a great explanation for the bug.